WO2011007774A1 - 摩擦攪拌接合用回転ツール - Google Patents
摩擦攪拌接合用回転ツール Download PDFInfo
- Publication number
- WO2011007774A1 WO2011007774A1 PCT/JP2010/061827 JP2010061827W WO2011007774A1 WO 2011007774 A1 WO2011007774 A1 WO 2011007774A1 JP 2010061827 W JP2010061827 W JP 2010061827W WO 2011007774 A1 WO2011007774 A1 WO 2011007774A1
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- WIPO (PCT)
- Prior art keywords
- friction stir
- stir welding
- probe pin
- rotary tool
- joined
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/12—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding
- B23K20/122—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir welding
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/12—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding
- B23K20/122—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir welding
- B23K20/1245—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir welding characterised by the apparatus
- B23K20/1255—Tools therefor, e.g. characterised by the shape of the probe
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/352—Working by laser beam, e.g. welding, cutting or boring for surface treatment
- B23K26/356—Working by laser beam, e.g. welding, cutting or boring for surface treatment by shock processing
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/06—Surface hardening
- C21D1/09—Surface hardening by direct application of electrical or wave energy; by particle radiation
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D10/00—Modifying the physical properties by methods other than heat treatment or deformation
- C21D10/005—Modifying the physical properties by methods other than heat treatment or deformation by laser shock processing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/20—Tools
Definitions
- the present invention relates to a rotary tool for friction stir welding used when friction stir welding a member to be joined made of a metal material such as an aluminum alloy, a magnesium alloy, a copper alloy, or a titanium alloy, and is particularly excellent in durability,
- the present invention relates to a rotary tool for friction stir welding capable of obtaining high-quality friction stir welding.
- FIG. 8 is a perspective view of the tip of the rotary tool showing an example of the rotary tool for friction stir welding used in the friction stir welding
- FIG. 9 is a diagram showing the friction stir welding method.
- the friction stir welding rotary tool 100 has a cylindrical shape, and has a cylindrical shoulder portion 101 at the tip thereof, and the probe pin 102 projects from the tip surface 101 a of the shoulder portion 101.
- a threaded portion 102 a is formed on the outer periphery of the distal end side of 102.
- the probe pins 102 protruding from the distal end surface 101 a of the shoulder portion 101 are joined to the joined members W of each other.
- the front end surface 101a of the shoulder portion 101 is brought into contact with the surface of the member W to be joined. In this state, the friction stir welding tool 100 is bonded along the bonding portion Wa between the members to be bonded W while moving along the bonding portion Wa of the member W to be bonded.
- the to-be-joined member W is plastically fluidized and fluidized by the frictional heat between the shoulder portion 101 and the probe pin 102 rotating at high speed and the to-be-joined member W.
- the member W to be joined is stirred by the screw part 102a provided on the outer periphery of the probe pin 102 at the joint part Wa, and then the part is cooled to join the members to be joined W at the joint part Wa.
- each to-be-joined member W when joining each other to-be-joined member W by friction stir welding, each to-be-joined member W can be joined at low temperature compared with welding, and while being able to suppress the thermal influence at the time of joining, it is joined part Wa.
- the whole can be joined uniformly, and further, dissimilar materials can be joined easily.
- hot tool steel is used as a material constituting the shoulder portion 101 and the probe pin 102 in the rotary tool 100 for friction stir welding.
- the rotary tool 100 for friction stir welding is rotated at a high speed so that the probe pin 102 is press-fitted into the joint portion Wa of each member to be joined W, and the tip surface 101a of the shoulder portion 101 is brought into contact with the member to be joined W.
- the member W to be joined is plastically fluidized by frictional heat, if the fluidized member W to be welded is welded to the shoulder portion 101 or the probe pin 102, the agitation resistance increases and the probe pin 102 is damaged. Further, the shoulder portion 101 and the probe pin 102 are exposed to a high temperature, and the wear becomes severe and the strength is lowered. The buckling and breakage of the probe pin 102 to which repeated tensile and compressive loads are applied, There is a concern that the joint Wa of the member W is thermally deformed.
- the member to be joined may be damaged, and the operator may be in danger.
- measures to prevent the friction stir welding rotary tool from being damaged there are various measures such as increasing the shaft diameter of the friction stir welding rotary tool, increasing the curvature of the stress concentration part, and increasing the strength of the friction stir welding rotary tool material.
- there is a method of extending the tool life by simplifying the shape of the threaded portion or the like, but in that case, excellent bonding characteristics cannot be realized.
- Patent Document 1 proposes a rotary tool for friction stir welding that suppresses the wear and breakage of the shoulder portion and the probe pin and suppresses the thermal influence of the joining member.
- a probe pin and a shoulder portion that come into contact with a member to be joined are made of a WC cemented carbide containing 5 to 18% by weight of Co.
- the friction stir welding rotary tool is rotated at a high speed so that the probe pin is press-fitted into the joint portion of the member to be joined and the front end surface of the shoulder portion is brought into contact, and the member to be joined is plastically fluidized by frictional heat. Join the members.
- the probe pin and the shoulder portion formed of the WC cemented carbide are excellent in wear resistance, but have low toughness, and the tensile and compressive load due to use is low. There is concern about damage due to repetition.
- a friction stir welding rotary tool having a probe pin and a shoulder portion made of a WC-based cemented carbide increases the manufacturing cost thereof, and the manufacturing cost of a product joined by the friction stir welding rotary tool increases. There is concern.
- shot peening By this shot peening, compressive residual stress can be applied to the probe pin of the rotary tool for friction stir welding formed of relatively inexpensive hot tool steel or heat-resistant alloy. It can also be assumed that a rotating tool is obtained.
- shot peening involves spraying a small steel ball or the like on the surface, so the surface of the probe pin and the tip of the shoulder is rough due to the shot mark, and the unevenness of the shot mark becomes the fatigue starting point. May decrease. Further, the surface shape accuracy of the probe pin and the tip end surface of the shoulder portion, particularly the screw portion formed on the outer periphery of the tip end of the probe pin, decreases due to shot marks. Due to this decrease in surface shape accuracy, there is a concern that the friction stir resistance between the probe pin and the front end surface of the shoulder portion and the member to be joined increases when joining the member to be joined, and the joining characteristics deteriorate. The
- the compressive residual stress imparted by shot peening is extremely shallow, and it is difficult to ensure a compressive residual stress sufficient for improving fatigue characteristics. Also, it is difficult to spray a hard sphere with high precision on a minute region by shot peening, and it is difficult to perform shot peening on a friction stir welding rotary tool having a small probe pin that requires surface shape accuracy.
- pulse laser peening has been developed as a method for applying compressive residual stress in the vicinity of the surface of a metal object.
- pulse laser peening can control the irradiation spot of the pulse laser beam with high accuracy, is suitable for selectively applying compressive residual stress to a minute region, and the surface shape accompanying the construction process It can be applied to machine parts that are small in change and require surface shape accuracy.
- the compressive residual stress can be applied deeper, and the compressive residual stress depth can be adjusted by controlling the irradiation conditions of the pulse laser beam such as the pulse energy, the spot diameter, and the number of pulse irradiations.
- an object of the present invention made in view of such a point is to provide a rotary tool for friction stir welding that is excellent in wear resistance and durability and that provides excellent bonding characteristics.
- the invention of the rotary tool for friction stir welding comprises a probe pin that protrudes from the distal end surface of a rotating shoulder portion and has a threaded portion on the outer periphery on the distal end side.
- the friction stir welding rotary tool that press-fits into the joint, moves the probe pin along the joint, and friction stir welds the members to be joined at the joint, pulse laser peening is performed on the outer peripheral surface of the probe pin It is characterized by.
- the present invention it becomes possible to apply a selective compressive residual stress to a minute region on the outer peripheral surface of a probe pin that is repeatedly subjected to tensile and compressive load stresses during joining, and the surface shape accuracy is small. Is maintained.
- deep compressive residual stress and hardness increase by pulse laser peening it is possible to suppress the occurrence of cracks in the probe pin to which tensile and compressive stress is repeatedly applied in accordance with friction stir welding. Therefore, buckling and breakage are suppressed and durability is greatly improved.
- a proximal end side range between a continuous portion continuous from the distal end surface of the shoulder portion on the outer peripheral surface of the probe pin and the screw portion.
- the present invention by applying pulsed laser peening to the base end side range of the probe pin to which repeated tensile and compressive stresses are concentrated in connection with friction stir welding, particularly compressive residual stress is concentrated by pulsed laser peening.
- the toughness in the proximal end side range of the probe pin to be applied is maintained, damage due to buckling and thermal deformation is suppressed, and durability is greatly improved.
- the compressive residual stress applied by the pulse laser peening is at a maximum temperature when the rotary tool for friction stir welding is used. It is characterized by being larger than the applied tensile stress and smaller than the compressive yield stress.
- the present invention by controlling the compressive residual stress applied by pulse laser peening to a range that is larger than the tensile stress applied at the highest temperature when using the rotary tool for friction stir welding and smaller than the compressive yield stress.
- the toughness of the probe pin is more reliably maintained, damage due to buckling and thermal deformation is suppressed, and durability is greatly improved.
- the surface hardness and toughness of the probe pin to which tensile and compressive stress are repeatedly applied in accordance with friction stir welding are maintained, and damage due to buckling and thermal deformation is suppressed and durability is maintained. Is greatly improved. Also, good bonding characteristics can be obtained without impairing the surface shape accuracy of the probe pin.
- FIG. 1 is a side view showing an outline of a rotary tool for friction stir welding
- FIG. 2 is a perspective view of a portion A in FIG. 1
- FIG. 3 is a cross-sectional view taken along a line II in FIG.
- a friction stir welding rotary tool 10 has a cylindrical shape made of hot tool steel that is rotated around an axis Z by a rotary drive device 1 such as an induction motor (not shown), and its tip.
- a rotary drive device 1 such as an induction motor (not shown)
- a cylindrical shoulder portion 11 is formed, and a probe pin 20 protruding along the axis Z from the center of the front end surface 13 of the shoulder portion 11 is formed.
- the distal end surface 13 of the shoulder portion 11 is formed in an inverted conical shape so that the center is recessed toward the proximal end side, and the probe pin 21 extends along the axis Z from the most recessed central portion. Projects in the tip direction.
- An annular corner 14 extending from the outer peripheral surface 12 and the front end surface 13 of the shoulder portion 11 is formed with a so-called corner R that smoothly continues in an arc shape.
- a continuous portion 15 where the distal end surface 13 and the proximal end of the probe pin 20 are continuous is formed with a so-called corner R that is smoothly connected in an arc shape.
- the probe pin 20 has a cylindrical shape, the proximal end side range 22 of the outer peripheral surface thereof has a perfect circular cross section, and the distal end side range 23 is formed with a helical thread portion 23a.
- the shoulder portion 11 and the probe pin 20 that are repeatedly subjected to tensile and compressive stress during use, and the shoulder portion that is stressed particularly concentratedly in this embodiment. 11 is subjected to pulsed laser peening on the surface of the base end side range 22 between the continuous portion 15 connected to the tip surface 13 of the eleventh portion and the screw portion 23a.
- the friction stir welding rotary tool 10 is driven to rotate about the axis Z, and the base end of the probe pin 20 including the continuous portion 15 connected to the front end surface 13 of the shoulder portion 11 of the rotating friction stir welding rotary tool 10 is rotated.
- the surface of the side range 22 (shown by hatching in FIG. 2) is focused and irradiated with a pulse laser beam, and the circumferential direction in which the friction stir welding rotary tool 10 rotates is scanned as shown in FIG.
- the scanning direction of the beam spot S is shifted from the proximal end side of the probe pin 20 to the distal end 24 side direction X in the direction Y.
- the beam spots S are scanned so that the beam spots S overlap each other in the scanning direction Y, and adjacent beam spots S in the X direction overlap each other.
- the surface of the proximal end side range 22 of the probe pin 20 including the connection portion 15 connected to the distal end surface 13 of the shoulder portion 11 is irradiated with a pulse laser beam to give compressive residual stress, and fatigue strength is increased.
- the irradiation spot of the pulsed laser beam is controlled so that the surface of the proximal end side range 22 of the probe pin 20 including the continuous portion 15 continuing to the preset distal end surface 13 of the shoulder portion 11 is highly accurate.
- the compressive residual stress is applied, and the surface shape change of the probe pin 20 including the continuous portion 15 is extremely small, and the surface shape accuracy of the probe pin 20 is maintained.
- a desired compressive residual stress depth can be secured.
- the compressive residual stress depth H is about 25% (H ⁇ D / 4) or less with respect to the diameter D of the probe pin 20, the probe pin 20 including the continuous portion 15 connected to the distal end surface 13 of the shoulder portion 11. The toughness is maintained while sufficiently securing the surface hardness.
- the compressive residual stress applied by the irradiation of the pulse laser beam is preferably set in consideration of a decrease in strength of the rotary tool 10 for friction stir welding due to a temperature rise accompanying friction stir welding.
- the most load is applied under the maximum temperature exposure during friction stir coupling. It is preferable to set it to be larger than the tensile stress in the proximal end side range 22 of the probe pin 20 and smaller than the compressive yield stress under the maximum temperature exposure.
- the probe pin 20 of the rotary tool for friction stir welding 10 reaches the joint portion Wa of the members W to be joined, the member W to be joined is heated by frictional heat between the rotating probe pin 20 and the member to be joined W. And the probe pin 20 is inserted.
- the probe pin 20 is inserted until the corner portion 14 of the shoulder portion 11 comes into contact with the surface of the contacted member W, and the shoulder pin 11 and the probe pin 20 that are rotated in a state of being inserted into the joined member W are joined.
- the member W to be joined is further heated and softened by frictional heat with the member W, and the member W to be joined at the joint Wa is plastically fluidized by the rotating probe pin 20.
- the to-be-joined member W fluidized in this way is stirred by the screw part 23a formed in the probe pin 20, and a plastic flow area is formed in the joining part Wa of the to-be-joined member W by this stirring.
- the friction stir welding rotary tool 10 is moved along the joint portion Wa of the member W to be joined, and sequentially joined along the joint portion Wa of the member W to be joined.
- the screw portion 23 a is used as the friction stir welding rotary tool. Since the threaded member W is pressed to the back by the action of the screw portion 23a, the tip surface 13 of the shoulder portion 11 is probed from the outer peripheral side. Since the pin 20 is formed so as to be recessed toward the center, the fluidized member W is suppressed from flowing out from the joint Wa, so that a cavity or the like is not formed. Both members to be joined W are uniformly joined at the joint Wa.
- pulse laser peening is performed on the proximal end side range 22 of the probe pin 20 including the continuous portion 15 continuous with the distal end surface 13 of the shoulder portion 11, thereby
- the compressive residual stress is applied without impairing the surface shape of the probe pin 20 including the distal end surface 13 and the continuous portion 15 continuous to the distal end surface 13, and the member W to be joined is friction stir welded along the joining portion Wa.
- the bonded member W is prevented from adhering to the probe pin 20 and the distal end surface 13 of the shoulder portion 11, and wear of the probe pin 20 and the shoulder portion 11 due to friction is reduced.
- the surface hardness and toughness of the proximal end side range 22 of the probe pin 20 including the portion 15 connected to the distal end surface 13 of the shoulder portion 11 to which tensile and compressive load stress is repeatedly applied in accordance with the friction stir welding is maintained. 11 is prevented from being damaged due to buckling or thermal deformation, and the durability is greatly improved.
- pulse laser peening is performed only in the range of the proximal end side range 22 of the probe pin 20 including the continuous portion 15 connected to the distal end surface 13 of the shoulder portion 11. Residual stress was applied to the part, but pulsed laser peening was applied over a wide range of the distal end surface 13 of the shoulder portion 11 and the outer peripheral surface of the probe pin 20 in contact with the member W to be joined in accordance with friction stir welding to apply compressive residual stress. May be. Even in this case, the surface shape change of the screw portion 23 is extremely small, and the surface shape accuracy of the entire probe pin 20 including the screw portion 23a is maintained.
- pulse laser peening treatment was applied to the proximal end side range of the probe pin including the portion connected to the distal end surface of the shoulder portion of the rotating tool for friction stir welding, and residual compressive stress was measured before and under high temperature exposure. .
- Friction stir welding rotary tool / friction stir welding rotary tool shape The cross section of the main portion of FIG. 6 is shown in FIG. The diameter D from the center is 2 mm, and the length L from the tip surface 13 to the tip 24 is 5 mm.
- Pulse laser peening processing range Pulse laser peening is performed on the proximal end side range 22 of the probe pin 20 including the continuous portion 15 connected to the distal end surface 13 of the shoulder portion 11 while the rotary tool 10 for friction stir welding is being rotationally driven.
- Material Table 1 shows the material of the rotary tool 20 for friction stir welding.
- Hot tool steel having mechanical properties as shown in Table 1, that is, Young's modulus: 210,000 N / mm 2 , tensile strength: 2,650 N / mm 2 , 0.2% proof stress: 1,960 N / mm 2
- the rotary tool 10 for friction stir welding was formed of hot tool steel having an elongation of 4% and a drawing of 13%. Stress state: The friction stir welding rotary tool 10 is inserted into a joint portion of a member to be joined while rotating at high speed, moves to one side along the joint portion, and repeatedly receives a tensile / compressive load.
- a tensile / compressive stress of about 400 MPa acts on the proximal end side range 22 that becomes the stress concentration portion of the probe pin 20.
- Temperature state On the other hand, the rotary tool 10 for friction stir welding is exposed to a high temperature by use from a normal temperature, and the temperature of the probe pin 20 rises to about 400 ° C.
- Pulse laser peening condition / requirement 1 The probe pin 20 of the rotary tool 10 for friction stir welding is exposed to high temperature during use, and the temperature is about 400 ° C. Therefore, considering that the strength of the probe pin 20 is about 30% lower than that at room temperature, the compressive residual stress applied by pulse laser peening is 30% for a tensile / compressive load of 400 MPa acting before normal high temperature exposure. It needs to be given to a large extent. Therefore, the compressive residual stress applied by pulse laser peening needs to be 571 MPa or more which is about 30% larger than the tensile / compressive load of 400 MPa.
- the compressive residual stress applied by pulse laser peening is equal to or less than the compressive yield stress under high temperature exposure, that is, 70 of 0.2% proof stress (1,960 MPa) of the material used for the rotary tool in FIG. % Or less, ie, 1,370 MPa or less.
- pulse laser peening is performed under the pulse laser peening conditions of cases 1 to 9 shown in Table 2, and the compressive residual stress before and after high temperature exposure (400 ° C) is measured. It was measured.
- the pulse energy shown in Case 7 and Case 8 30 mJ, spot diameter: 0.35 mm, number of times of pulse irradiation: 60pls / mm 2 and 120pls / mm 2 to satisfy the above requirement 1 and requirement 2 can be confirmed in .
- the spot diameter is 0.2 mm and the number of pulse irradiations is 180 pls / mm 2.
- the spot diameter is 0.3 mm and the number of pulse irradiations is 90 to 270 pls / mm 2.
- the pulse energy is 30 mJ, the spot diameter is 0.35 mm and the pulse irradiation frequency is 60 to 120 pls / mm 2.
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Abstract
Description
このように構成された摩擦攪拌接合用回転ツール10を用いて互いの被接合部材Wを接合部Waにおいて摩擦攪拌接合させるにあたっては、図5に示すように、回転駆動手段1によって摩擦攪拌接合用回転ツール10を高速で回転させながら軸線Zに沿って下降させる。
・摩擦攪拌接合用回転ツール形状:図6に要部断面を示し、かつ図3と対応する部分に同一符号を付すように、ショルダー部11の先端面13の中央から径Dが2mm、先端面13から先端24までの長さLが5mmである。
・パルスレーザピーニング処理範囲:摩擦攪拌接合用回転ツール10を回転駆動状態でショルダー部11の先端面13に連なる連続部分15を含むプローブピン20の基端側範囲22にパルスレーザピーニングを施す。
・材質:摩擦攪拌接合用回転ツール20の材質を表1に示す。表1に示すような機械的特性を有する熱間工具鋼、即ちヤング率:210,000N/mm2、引張強さ:2,650N/mm2、0.2%耐力:1,960N/mm2、伸び:4%、絞り:13%の熱間工具鋼により摩擦攪拌接合用回転ツール10を形成した。
・応力状態:摩擦攪拌接合用回転ツール10は、高速回転しながら被接合部材の接合部に差し込まれて、接合部に沿って一方に移動し、引張/圧縮荷重を繰り返し受ける。ここで、この摩擦攪拌接合用回転ツール10の場合、プローブピン20の応力集中部となる基端側範囲22に400MPa程度の引張/圧縮応力が作用する。
・温度状態:一方、摩擦攪拌接合用回転ツール10は、通常の温度から使用により高温下に曝露されてプローブピン20の温度は約400℃まで上昇する。
・必要条件1:摩擦攪拌接合用回転ツール10のプローブピン20は使用時に高温曝露下となり、温度が約400℃程度となる。したがってプローブピン20の強度は常温時と比較し約30%低下することを考慮し、パルスレーザピーニングにより付与される圧縮残留応力を通常の高温曝露前において作用する引張/圧縮荷重400MPaに対し30%程度大きく付与する必要がある。よって、パルスレーザピーニングにより付与される圧縮残留応力は引張/圧縮荷重400MPaに対し30%程度大きな571MPa以上が必要である。・必要条件2:一方、パルスレーザピーニングにより付与される圧縮残留応力は高温曝露下での圧縮降伏応力以下、すなわち図7における回転ツールの使用材質の0.2%耐力(1,960MPa)の70%以下、即ち1,370MPa以下に設定する必要がある。
パルスエネルギ20mJの場合、スポット径:0.3mmでかつパルス照射回数90~270pls/mm2
パルスエネルギ30mJの場合、スポット径:0.35mmでかつパルス照射回数60~120pls/mm2
ケース1、4~8の条件でパルスレーザピーニングを施した摩擦攪拌接合用回転ツールを使用して以下の評価を行い、プローブピン20の折損がなく、良好な摩擦攪拌接合特性が得られる状態で接合距離も2倍以上延ばせることを確認した。
・パルスレーザピーニングを施したケース1、4~8の摩擦攪拌接合用回転ツールを用いて摩擦攪拌接合した後に引張試験及び疲労試験を行い、強度及び疲労サイクル数を満足していることを確認した。
・所望距離だけ摩擦攪拌接合を行い、プローブピン20の折損がないことを確認した。
11 ショルダー部
12 外周面
13 先端面
15 連続部分
20 プローブピン
22 基端側範囲
23 先端側範囲
24 先端
W 被接合部材
Wa 接合部
Claims (3)
- 回転するショルダー部の先端面から突出され先端側外周にねじ部を備えたプローブピンを、被接合部材の接合部に圧入させ、該接合部に沿ってプローブピンを移動して、接合部における被接合部材を摩擦攪拌接合させる摩擦攪拌接合用回転ツールにおいて、
上記プローブピンの外周面にパルスレーザピーニングを施したことを特徴とする摩擦攪拌接合用回転ツール。 - 上記プローブピンの外周面におけるショルダー部の先端面に連続する連続部分から上記ねじ部との間の基端側範囲に上記パルスレーザピーニングを施したことを特徴とする請求項1に記載の摩擦攪拌接合用回転ツール。
- 上記パルスレーザピーニングにより付与される圧縮残留応力が、摩擦攪拌接合用回転ツールの使用時における最高温度下で付与される引張応力より大きく、かつ上記最高温度下での上記回転ツール使用材質の圧縮降伏応力より小さいことを特徴とする請求項1または2に記載の摩擦攪拌接合用回転ツール。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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US13/383,403 US20120318848A1 (en) | 2009-07-14 | 2010-07-13 | Rotary tool for friction stir welding |
CN2010800316856A CN102470480A (zh) | 2009-07-14 | 2010-07-13 | 摩擦搅拌接合用旋转工具 |
EP10799832.0A EP2455178A4 (en) | 2009-07-14 | 2010-07-13 | Rotary tool for friction stir welding |
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JP2009-165228 | 2009-07-14 | ||
JP2009165228A JP5654219B2 (ja) | 2009-07-14 | 2009-07-14 | 摩擦攪拌接合用回転ツール |
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WO2011007774A1 true WO2011007774A1 (ja) | 2011-01-20 |
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PCT/JP2010/061827 WO2011007774A1 (ja) | 2009-07-14 | 2010-07-13 | 摩擦攪拌接合用回転ツール |
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US (1) | US20120318848A1 (ja) |
EP (1) | EP2455178A4 (ja) |
JP (1) | JP5654219B2 (ja) |
KR (1) | KR20120054005A (ja) |
CN (1) | CN102470480A (ja) |
WO (1) | WO2011007774A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2015053258A1 (ja) * | 2013-10-07 | 2015-04-16 | 新日鉄住金エンジニアリング株式会社 | 摩擦撹拌接合工具、及び積層材の接合方法 |
CN112719817A (zh) * | 2021-02-02 | 2021-04-30 | 铜陵学院 | 一种激光熔覆螺旋形耐磨条纹涂层的分体式搅拌摩擦焊搅拌头及其加工方法 |
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Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9095927B2 (en) * | 2011-08-19 | 2015-08-04 | Nippon Light Metal Company, Ltd. | Friction stir welding method |
JP5949071B2 (ja) * | 2012-04-03 | 2016-07-06 | 新日鐵住金株式会社 | 摩擦攪拌接合工具及び異質部材の摩擦攪拌接合方法 |
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JP6048079B2 (ja) * | 2012-11-08 | 2016-12-21 | 三菱マテリアル株式会社 | 高抗折力で耐折損性にすぐれた切削工具用wc基超硬合金製線材 |
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NL2018981B1 (en) * | 2017-05-26 | 2018-12-07 | Univ Johannesburg Witwatersrand | Method and system for improving the surface fracture toughness of brittle materials, and a cutting tool produced by such method |
JP2019107665A (ja) * | 2017-12-18 | 2019-07-04 | 日本軽金属株式会社 | 液冷ジャケットの製造方法 |
FR3075675B1 (fr) * | 2017-12-22 | 2020-01-03 | Constellium Issoire | Outil pour realiser une soudure par friction malaxage |
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EP3868507A4 (en) * | 2018-10-15 | 2022-07-27 | Osaka University | FRICTION WELDING TOOL ELEMENT AND FRICTION WELDING PROCESS WITH USE THEREOF |
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Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005199281A (ja) | 2004-01-13 | 2005-07-28 | Dijet Ind Co Ltd | 摩擦攪拌接合用ツール |
JP2006218541A (ja) * | 2005-01-11 | 2006-08-24 | Nippon Steel Corp | 金属物体のレーザピーニング処理方法およびレーザピーニング処理方法で製造した金属物体 |
JP2007175777A (ja) * | 1999-07-19 | 2007-07-12 | Regents Of The Univ Of California | レーザピーニングにより金属に形状および輪郭を形成するための装置 |
JP2008030096A (ja) * | 2006-07-28 | 2008-02-14 | Kawasaki Heavy Ind Ltd | 摩擦撹拌接合装置および摩擦撹拌接合ツール |
JP2008114258A (ja) * | 2006-11-06 | 2008-05-22 | Hitachi Ltd | 摩擦攪拌接合用ツール及び摩擦攪拌接合装置 |
WO2008102209A2 (en) * | 2006-08-21 | 2008-08-28 | H.C. Starck Ltd | Refracrory metal tool for friction stir welding comprising a shoulder made of tungsten, molybdenum, tantalum, niobium or hafnium alloy and a coated or treated surface |
JP2008248270A (ja) * | 2007-03-29 | 2008-10-16 | Toshiba Corp | レーザ衝撃硬化処理方法およびレーザ衝撃硬化処理装置 |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6075593A (en) * | 1999-08-03 | 2000-06-13 | General Electric Company | Method for monitoring and controlling laser shock peening using temporal light spectrum analysis |
US6238187B1 (en) * | 1999-10-14 | 2001-05-29 | Lsp Technologies, Inc. | Method using laser shock peening to process airfoil weld repairs pertaining to blade cut and weld techniques |
US6548782B2 (en) * | 2001-01-23 | 2003-04-15 | Lsp Technologies, Inc. | Overlay control for laser peening |
US6676004B1 (en) * | 2001-02-13 | 2004-01-13 | Edison Welding Institute, Inc. | Tool for friction stir welding |
JP2003048084A (ja) * | 2001-08-01 | 2003-02-18 | Mazda Motor Corp | 回転工具及びその製造方法、並びに当該回転工具を用いた処理方法 |
US7159425B2 (en) * | 2003-03-14 | 2007-01-09 | Prevey Paul S | Method and apparatus for providing a layer of compressive residual stress in the surface of a part |
GB0502067D0 (en) * | 2005-02-01 | 2005-03-09 | Airbus Uk Ltd | Friction stir welding tool |
-
2009
- 2009-07-14 JP JP2009165228A patent/JP5654219B2/ja active Active
-
2010
- 2010-07-13 CN CN2010800316856A patent/CN102470480A/zh active Pending
- 2010-07-13 KR KR1020127000412A patent/KR20120054005A/ko not_active Application Discontinuation
- 2010-07-13 EP EP10799832.0A patent/EP2455178A4/en not_active Withdrawn
- 2010-07-13 US US13/383,403 patent/US20120318848A1/en not_active Abandoned
- 2010-07-13 WO PCT/JP2010/061827 patent/WO2011007774A1/ja active Application Filing
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007175777A (ja) * | 1999-07-19 | 2007-07-12 | Regents Of The Univ Of California | レーザピーニングにより金属に形状および輪郭を形成するための装置 |
JP2005199281A (ja) | 2004-01-13 | 2005-07-28 | Dijet Ind Co Ltd | 摩擦攪拌接合用ツール |
JP2006218541A (ja) * | 2005-01-11 | 2006-08-24 | Nippon Steel Corp | 金属物体のレーザピーニング処理方法およびレーザピーニング処理方法で製造した金属物体 |
JP2008030096A (ja) * | 2006-07-28 | 2008-02-14 | Kawasaki Heavy Ind Ltd | 摩擦撹拌接合装置および摩擦撹拌接合ツール |
WO2008102209A2 (en) * | 2006-08-21 | 2008-08-28 | H.C. Starck Ltd | Refracrory metal tool for friction stir welding comprising a shoulder made of tungsten, molybdenum, tantalum, niobium or hafnium alloy and a coated or treated surface |
JP2008114258A (ja) * | 2006-11-06 | 2008-05-22 | Hitachi Ltd | 摩擦攪拌接合用ツール及び摩擦攪拌接合装置 |
JP2008248270A (ja) * | 2007-03-29 | 2008-10-16 | Toshiba Corp | レーザ衝撃硬化処理方法およびレーザ衝撃硬化処理装置 |
Non-Patent Citations (1)
Title |
---|
See also references of EP2455178A4 * |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2015053258A1 (ja) * | 2013-10-07 | 2015-04-16 | 新日鉄住金エンジニアリング株式会社 | 摩擦撹拌接合工具、及び積層材の接合方法 |
JP5879460B2 (ja) * | 2013-10-07 | 2016-03-08 | 新日鉄住金エンジニアリング株式会社 | 積層材の接合方法 |
CN112719817A (zh) * | 2021-02-02 | 2021-04-30 | 铜陵学院 | 一种激光熔覆螺旋形耐磨条纹涂层的分体式搅拌摩擦焊搅拌头及其加工方法 |
Also Published As
Publication number | Publication date |
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EP2455178A4 (en) | 2017-08-02 |
JP2011020125A (ja) | 2011-02-03 |
JP5654219B2 (ja) | 2015-01-14 |
CN102470480A (zh) | 2012-05-23 |
US20120318848A1 (en) | 2012-12-20 |
KR20120054005A (ko) | 2012-05-29 |
EP2455178A1 (en) | 2012-05-23 |
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