WO2016047394A1 - 接合部処理方法及びドーム部材 - Google Patents

接合部処理方法及びドーム部材 Download PDF

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Publication number
WO2016047394A1
WO2016047394A1 PCT/JP2015/074846 JP2015074846W WO2016047394A1 WO 2016047394 A1 WO2016047394 A1 WO 2016047394A1 JP 2015074846 W JP2015074846 W JP 2015074846W WO 2016047394 A1 WO2016047394 A1 WO 2016047394A1
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WIPO (PCT)
Prior art keywords
joint
plastic working
friction stir
stir welding
metal material
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2015/074846
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English (en)
French (fr)
Japanese (ja)
Inventor
佐藤　広明
弘基 赤松
稔明 遠藤
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Mitsubishi Heavy Industries Ltd
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Mitsubishi Heavy Industries Ltd
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Filing date
Publication date
Application filed by Mitsubishi Heavy Industries Ltd filed Critical Mitsubishi Heavy Industries Ltd
Priority to US15/328,662 priority Critical patent/US10512985B2/en
Priority to EP15845443.9A priority patent/EP3159091B1/en
Publication of WO2016047394A1 publication Critical patent/WO2016047394A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • 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
    • B23K20/1275—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 involving metallurgical change
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
    • B21D22/14—Spinning
    • 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
    • B23K20/22—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating taking account of the properties of the materials to be welded
    • B23K20/233—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating taking account of the properties of the materials to be welded without ferrous layer
    • B23K20/2336—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating taking account of the properties of the materials to be welded without ferrous layer both layers being aluminium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
    • C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
    • C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B5/00—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them
    • F16B5/08—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of welds or the like
    • 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
    • B23K2103/00—Materials to be soldered, welded or cut
    • B23K2103/08—Non-ferrous metals or alloys
    • B23K2103/10—Aluminium or alloys thereof

Definitions

  • the nuclei of recrystallization can be increased in the bonding portion.
  • the solution treatment process is performed after the plastic working process, the growth of the recrystallization nuclei can be mutually suppressed by an amount corresponding to the increase of the recrystallization nuclei, thereby suppressing the coarsening of the crystal grains in the joint, It is possible to achieve refinement of crystal grains in the bonding portion.
  • the refinement of the crystal grains means that the crystal grain size is smaller than the crystal grain size in the bonded portion or the base material portion before the friction stir welding step.
  • a heating source for heating the welded portion is provided on the opposite side of the welding tool in the thickness direction of the welded portion.
  • the hardness of the metal material can be increased by subjecting the metal material to an aging treatment. Therefore, when an aluminum alloy is applied as the metal material, T6 which is the quality of the aluminum alloy defined by the Japanese Industrial Standard (JIS) can be obtained.
  • JIS Japanese Industrial Standard
  • plastic working is performed so that the thickness of the bonding portion is reduced, thereby suppressing the coarsening of the structure at the time of solution treatment in the bonding portion, and the thickness of the bonding portion
  • the thickness of the portion other than the joint can be made the same thickness.
  • the metal material is preferably an aluminum alloy.
  • the amount of strain given to the joint by plastic working can be appropriately controlled. Further, when the temperature is 100 ° C. or less, no recovery phenomenon etc. occurs, so that no phenomenon occurs in which the strain inserted by plastic working is released during processing, and the amount of nuclei of recrystallization for suppressing coarsening Can also be controlled.
  • the dome member according to the present invention is a dome member formed in a dome shape by subjecting a plate-shaped metal material in which a joint is formed by friction stir welding to rotational dome processing, and the metal material is the above-mentioned rotational plasticity At the time of processing, it is formed in a dome shape which is curved from the center to the outside while being given a strain amount such that the thickness of the metal material becomes thinner from the center to the outside, and is formed in the metal
  • the joint portion is characterized in that it is formed in a region where the amount of strain given at the time of the rotational plastic working is 5% or more.
  • FIG. 1 is a flowchart of a joint processing method according to the first embodiment.
  • FIG. 2 is a cross-sectional view showing an example of a friction stir welding apparatus used in the friction stir welding process.
  • FIG. 3 is a graph relating to a joint where the Vickers hardness is changed by the annealing process.
  • FIG. 4 is a table relating to crystal grains that change at the joint due to the annealing process.
  • FIG. 5 is a view showing an example of a joint portion corresponding to the table of FIG.
  • FIG. 6 is a graph of the grain size which changes with the amount of strain given in the plastic working process.
  • FIG. 7 is a view showing an example of a joint obtained by performing a plastic working process.
  • FIG. 1 is a flowchart of a joint processing method according to the first embodiment.
  • FIG. 2 is a cross-sectional view showing an example of a friction stir welding apparatus used in the friction stir welding process.
  • FIG. 3 is a graph relating to
  • FIG. 8 is a graph regarding the amount of strain (thickness change) of the dome member to which the joint processing method is applied.
  • FIG. 9 is a plan view showing an example of a flat plate which is a material of the dome member installed in the material installation process.
  • FIG. 10 is a top view which shows an example of the flat plate used as the material of the dome member installed in a material installation process.
  • FIG. 11 is a plan view showing a conventional example of a flat plate which is a material of the dome member.
  • FIG. 12 is a flowchart of the joint processing method according to the second embodiment.
  • FIG. 13 is an explanatory view of the method for processing a joint portion according to the third embodiment.
  • a flat plate configured by using an aluminum alloy is applied as the metal material.
  • the flat plate is installed such that the end faces of the flat plate are butted to form a groove (joint).
  • the groove part which abuts the flat plate was made into the to-be-joined part used as the object of friction stir welding, it is not specifically limited by this structure, It may be.
  • a joint is formed by performing friction stir welding (FSW) on the groove formed in the material installation process S1, and thereby, flat plates that are butted to each other are formed. Are joined.
  • FSW friction stir welding
  • the friction stir welding apparatus 1 is used, and friction stir welding is performed from both sides with the groove portion interposed therebetween.
  • the friction stir welding apparatus 1 has a first rotary tool 21 and a second rotary tool 22 as welding tools.
  • the first rotary tool 21 is disposed on the upper side (one side) in the thickness direction of the groove 6 with the groove 6 interposed therebetween.
  • the first rotary tool 21 rotates about the first rotation axis I1 and is pressed against the upper surface of the groove 6.
  • the second rotary tool 22 is disposed on the lower side (the other side) in the thickness direction of the groove 6 with the groove 6 interposed therebetween.
  • the second rotation tool 22 rotates about the second rotation axis I 2 and is pressed against the lower surface of the groove 6.
  • the first rotation tool 21 is configured to include a first probe 32 and a first shoulder portion 35.
  • the first probe 32 is formed to be longer than half the thickness of the groove 6.
  • channel for stirring the metal of the softened groove part 6 is formed in the outer peripheral surface of the 1st probe 32.
  • the first shoulder 35 is in contact with the upper surface of the groove 6.
  • the first rotary tool 21 as described above rotates the first shoulder portion 35 in contact with the upper surface of the groove portion 6 to impart heat by friction to the groove portion 6 to apply heat thereto.
  • the groove portion 6 softened in the above is stirred by the first probe 32. Therefore, a first agitation area to be frictionally agitated by the first rotary tool 21 is formed on the upper side of the groove portion 6.
  • the flat plate 5 including the joint portion formed in the friction stir welding step S2 is annealed (annealed) at a predetermined annealing temperature.
  • the annealing step S3 is performed to make the hardness of the flat plate 5 after the friction stir welding uniform.
  • the horizontal axis is the distance from the center (0) of the weld width of the joint
  • the vertical axis is the Vickers hardness (Hv).
  • Hv Vickers hardness
  • the joint after annealing has substantially the same hardness over the entire area of the welding width, and the hardness is uniform.
  • the annealing step S3 by making the hardness of the joint uniform, local deformation of the flat plate 5 in which the joint is formed is suppressed during plastic working in the plastic working step S4 which is a post-step. It is possible to apply strain uniformly.
  • the change of the crystal grain diameter of the junction part 7 by the change of the annealing temperature in annealing process S3 is demonstrated.
  • the crystal grain size of the aluminum alloy in the joint portion 7 changes in size depending on the annealing temperature in the annealing step S3.
  • the term on the left side is the annealing temperature
  • the term on the right side is the occurrence of coarsening in which the crystal grain size is increased.
  • the joint portion 7 formed when the annealing temperature shown in FIG. 4 is 413 ° C. is P1 shown in FIG.
  • the joint 7 formed at the annealing temperature of 393 ° C. shown in FIG. 4 is P2 shown in FIG.
  • the joint part 7 formed when the annealing temperature shown in FIG. 4 is 373 ° C. is P3 shown in FIG.
  • the junction part 7 formed when the annealing temperature shown in FIG. 4 is 353 ° C. is P4 shown in FIG.
  • the friction stir temperature of the friction stir bonding step S2 is a temperature between 400 ° C. and 550 ° C.
  • the annealing temperature at P1 is higher than the lower limit value of the friction stir temperature It has become.
  • the annealing temperature at P2 is slightly lower than the friction stirring temperature.
  • the annealing temperature at P3 is lower than the friction stirring temperature and lower than the annealing temperature of P2.
  • the annealing temperature in P4 is lower than friction stirring temperature, and is lower than the annealing temperature of P3.
  • the plastic working is performed in a cold state on the joint 7 after annealing under predetermined plastic working conditions.
  • the plastic working conditions are conditions which become equal to or less than the grain size of the aluminum alloy in the groove 6 before the friction stir welding step S2.
  • a predetermined amount of strain is given to the joint 7 by plastic working so that the thickness of the joint 7 is reduced.
  • the flat plate 5 including the joint 7 after plastic working is solutionized.
  • the grain size of the crystal formed in the joint 7 changes depending on the plastic working conditions in the plastic working step S4.
  • the crystal grain diameter which changes according to the amount of strain given to junction part 7 after plastic working process S4 and solution treatment process S5 is explained.
  • the horizontal axis is the strain amount
  • the vertical axis is the crystal grain size.
  • the amount of strain is the amount of deformation of the joint 7 before and after plastic working, for example, the ratio when the thickness of the joint 7 after plastic working is thinner than the thickness of the joint 7 before plastic working It is.
  • the crystal grain sizes of the groove 6 and the base material before the friction stir welding are in the range of the region R.
  • the crystal grain size in the region R is approximately between 0.1 mm and 0.15 mm.
  • the grain size of the joint 7 is about 0.35 mm.
  • the grain size of the joint 7 is about 0.15 mm.
  • the plastic working process S4 by performing the plastic working on the joint 7 under the plastic working condition in which the strain amount is 5% or more, the coarsening of the crystal grains of the joint 7 can be suppressed. confirmed. For this reason, in the plastic working process S4, the plastic working is performed on the joint portion 7 under plastic working conditions in which the strain amount is 5% or more.
  • the strain amount is 10% or more, the structure including the base material portion is miniaturized and becomes uniform, and the difference between the bonding portion 7 and the base material portion is not recognized.
  • the dome member 51 is formed in the plastic working process S4 of the joint processing method. That is, the dome member 51 is formed by plastically working the flat plate 5 before plastic working. In the plastic working process S4, a dome-shaped dome member 51 that is curved outward from the center side of the flat plate 5 is formed by performing rotational plastic working, so-called spinning, on the flat plate 5.
  • the horizontal axis is the position (radial position) in the radial direction of the dome member 51
  • the vertical axis is the amount of strain.
  • the amount of strain is the ratio of the thickness after plastic working to the thickness before plastic working, and the numerical value when the thickness before and after plastic working does not change is 1.00, and the strain is 0%. It becomes.
  • the amount of strain of the dome member 51 subjected to rotational plastic working increases from the center side toward the outer side, and the strain amount becomes 5% at a position where the radial position is r1.
  • FIGS. 9 and 10 show the flat plate 5 before plastic working to be friction stir welded.
  • a region corresponding to the region Sa of the dome member 51 is formed on the center side, and a region corresponding to the region Sb of the dome member 51 is formed outside the region Sa. ing.
  • the bonding portion 7 formed in the flat plate 5 is formed in the region Sb.
  • the flat plate 5 when forming the joint portion 7 in the region Sb, the flat plate 5 is configured using three work pieces W1 to W3. Specifically, among the three work pieces W1 to W3, the work piece W1 has a size in which the area Sa can be accommodated, and the work piece W1 is disposed at the center. The remaining two work pieces W2 and W3 are disposed on both sides of the work piece W1, whereby groove portions 6 are respectively formed on both sides of the work piece W1. In the friction stir welding step S2, by friction stir welding the two groove portions 6 formed on both sides of the work piece W1, the flat plate 5 in which the bonding portion 7 is formed in the region Sb can be obtained.
  • the flat plate 5 is configured using five work pieces W11 to W15. Specifically, among the five work pieces W11 to W15, the work piece W11 has a size that the area Sa can be accommodated, and the work piece W11 is disposed at the center. The remaining four work pieces W12 to W15 are arranged around the work piece W11, whereby the groove 6 is formed around the work piece W11. In the friction stir welding step S2, by friction stir welding the four groove portions 6 formed around the work piece W11, the flat plate 5 in which the bonding portion 7 is formed in the region Sb can be obtained.
  • the joining start point and joining end point in the friction stir welding step S2 are at the time of spinning It can be located in the area outside the dome member 51 to be formed. For this reason, it is possible to make one side of the rectangular flat plate 5 substantially the same length as the diameter of the dome member 51.
  • the nuclei of recrystallization are increased in the joint portion 7 It can be done.
  • the solution treatment step S5 is performed after the plastic working step S4
  • the growth of the nuclei of recrystallization can be mutually suppressed by an amount corresponding to the increase of the nuclei of recrystallization.
  • the crystal grains of the bonding portion 7 can be made finer.
  • the coarsening of the crystal grains of the joint 7 is suitably made by setting the plastic working condition to be a condition where the strain amount of the joint before and after the plastic working process S4 is 5% or more. It can be suppressed.
  • the hardness of the joint portion 7 of the flat plate 5 can be made uniform, and local deformation of the flat plate 5 can be achieved during the plastic working step S4. While being suppressed, strain can be applied uniformly.
  • Example 1 coarsening of the crystal grain in the junction part 7 can be suppressed by making friction stirring temperature high in annealing process S3, and lowering annealing temperature.
  • the friction stir welding is performed from both sides of the groove portion 6 and the first stirring region formed by the first rotary tool 21 and the second stirring formed by the second rotary tool 22 It is possible to overlap the area. For this reason, since it can carry out friction stirring over the whole region of the thickness direction of the junction part 7, the heat input to the junction part 7 by friction stirring can be performed over the whole region of the thickness direction.
  • the hardness of the flat plate 5 can be increased by performing the aging step S6 after performing the plastic working step S4 in a cold state and performing the solution treatment step S5. Therefore, even when the joint 7 is formed on the flat plate 5, it can be T6 which is the quality of the aluminum alloy defined by the Japanese Industrial Standard (JIS).
  • JIS Japanese Industrial Standard
  • the flat plate 5 can be formed on the dome member 51 while giving distortion to the flat plate 5, so coarsening of crystal grains is caused.
  • the flat plate 5 can be processed into a dome shape while suppressing the
  • the plastic working process S4 can be performed in a cold state, the plastic working to the joint 7 is appropriately performed while appropriately controlling the amount of strain given to the joint 7. be able to. Further, when the temperature is 100 ° C. or less, no recovery phenomenon etc. occurs, so that no phenomenon occurs in which the strain inserted by plastic working is released during processing, and the amount of nuclei of recrystallization for suppressing coarsening Can also be controlled.
  • Example 1 although annealing process S3 was provided, when hardness of joining part 7 after friction stir welding process S2 becomes uniform, or a difference in hardness does not have an adverse effect on plastic working process S4.
  • the annealing step S3 may be omitted.
  • FIG. 12 is a flowchart of the joint processing method according to the second embodiment.
  • the portions different from the first embodiment will be described, and the portions having the same configuration as the first embodiment are denoted by the same reference numerals.
  • the strain applying step S7 is performed after the solution processing between the solution treatment step S5 and the aging step S6 of the joint processing method according to the first embodiment.
  • the joint processing method according to the second embodiment will be described.
  • the strain applying step S7 is performed after the solution treatment step S5 and before the aging step S6.
  • the strength of the flat plate 5 is improved by plastically working the flat plate 5 after the solution treatment in a cold state.
  • the amount of strain given to the flat plate 5 in the strain applying step S7 is in the range of 2% to 8%, and the larger the amount of strain, the higher the strength after the aging treatment.
  • Example 2 after the plastic working process S4 is performed in the cold state and the solution treatment process S5 is performed, the strain applying process S7 is performed in the cold state, and the aging process S6 is performed.
  • the strength of the flat plate 5 can be increased. Therefore, even when the joint portion 7 is formed on the flat plate 5, it can be T8 which is the quality of the aluminum alloy defined by the Japanese Industrial Standard (JIS). This is because the bonding portion 7 after the solution treatment has a crystal grain which is not coarsened, and therefore has a quality that can withstand processing even when a high degree of strain is applied.
  • JIS Japanese Industrial Standard
  • FIG. 13 is an explanatory view of the method for processing a joint portion according to the third embodiment.
  • parts different from the first and second embodiments will be described to avoid redundant description, and the same reference numerals are given to parts having the same configuration as the first and second embodiments.
  • the thickness of the joint 7 is larger than the thickness of the portion other than the joint. The joint processing method according to the third embodiment will be described below.
  • Friction stir welding is performed by the rotary tool 21 and the second rotary tool 22 to form the joint 7 (S102).
  • the thickness of the bonding portion 7 formed in the friction stir welding step S2 is larger than the thickness other than the bonding portion 7.
  • plastic working is performed so that the thickness of the bonding portion 7 is reduced in the plastic working process S4, thereby suppressing the coarsening of crystal grains in the bonding portion 7;
  • the thickness of the bonding portion 7 and the thickness of the portion other than the bonding portion 7 can be made the same thickness.
  • the forging process may be performed as the plastic working process S4.
  • the dead metal region is not formed by applying pressure to the joint portion 7 a plurality of times with a hammer or the like. And plastic working may be performed.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)
PCT/JP2015/074846 2014-09-24 2015-09-01 接合部処理方法及びドーム部材 Ceased WO2016047394A1 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US15/328,662 US10512985B2 (en) 2014-09-24 2015-09-01 Joint processing method and dome member
EP15845443.9A EP3159091B1 (en) 2014-09-24 2015-09-01 Joint processing method and dome member

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JP2014194396A JP6403515B2 (ja) 2014-09-24 2014-09-24 接合部処理方法及びドーム部材
JP2014-194396 2014-09-24

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JP6332562B2 (ja) * 2016-03-31 2018-05-30 Ｊｆｅスチール株式会社 構造用鋼の摩擦撹拌接合方法及び装置
WO2019026864A1 (ja) 2017-08-01 2019-02-07 Ｊｆｅスチール株式会社 金属板の両面摩擦撹拌接合方法および両面摩擦撹拌接合装置
EP3653329B1 (en) * 2017-09-13 2023-10-11 JFE Steel Corporation Double-sided friction stir welding method for metal plate
JP7118688B2 (ja) * 2018-03-28 2022-08-16 三菱重工業株式会社 被加工物の加工方法及び加工装置
WO2022010718A1 (en) * 2020-07-09 2022-01-13 Lam Research Corporation Friction stir processing for corrosion resistance
JP7452496B2 (ja) * 2021-06-07 2024-03-19 日本軽金属株式会社 接合体の製造方法および接合装置
CN115572981B (zh) * 2022-09-09 2024-06-11 常熟市常沪螺母制造有限公司 金属冷镦线材表面结晶工艺生产线
CN119772514A (zh) * 2024-12-17 2025-04-08 中国科学院金属研究所 一种铝合金件及其制备方法

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US20170209957A1 (en) 2017-07-27
EP3159091A4 (en) 2017-08-23
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