JPH0459954A - Surface treatment for titanium alloy material - Google Patents
Surface treatment for titanium alloy materialInfo
- Publication number
- JPH0459954A JPH0459954A JP17012490A JP17012490A JPH0459954A JP H0459954 A JPH0459954 A JP H0459954A JP 17012490 A JP17012490 A JP 17012490A JP 17012490 A JP17012490 A JP 17012490A JP H0459954 A JPH0459954 A JP H0459954A
- Authority
- JP
- Japan
- Prior art keywords
- titanium alloy
- alloy material
- hardened layer
- treatment
- heating device
- 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.)
- Pending
Links
- 229910001069 Ti alloy Inorganic materials 0.000 title claims abstract description 48
- 239000000956 alloy Substances 0.000 title claims abstract description 35
- 238000004381 surface treatment Methods 0.000 title claims description 5
- 238000010438 heat treatment Methods 0.000 claims abstract description 25
- 230000032683 aging Effects 0.000 claims abstract description 9
- 238000000034 method Methods 0.000 claims description 10
- 239000000463 material Substances 0.000 description 8
- 239000010936 titanium Substances 0.000 description 6
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 4
- 229910052719 titanium Inorganic materials 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- 238000007751 thermal spraying Methods 0.000 description 2
- 238000003483 aging Methods 0.000 description 1
- 230000003679 aging effect Effects 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002431 foraging effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004881 precipitation hardening Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
Landscapes
- Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、摺動部、はめ合部等の７レツテイング、コロ
ージ１ンの防止対策等に適用されるチタン合金材の表面
処理方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for surface treatment of titanium alloy materials, which is applied to prevent sliding parts, fitting parts, etc., and corrosion.
チタン及びチタン合金の表面硬化方法としては、従来メ
ツキ、溶射及びある種の硬質焼付塗装が用いられている
が、これらは、いずれもはく離しやすく、長期間の使用
には耐えられない。Conventional methods for hardening the surface of titanium and titanium alloys include plating, thermal spraying, and certain types of hard baked coatings, but all of these methods tend to peel off easily and cannot withstand long-term use.
従来のチタン又はチタン合金に於ける表面硬化方法では
、前記のように、メツキ、溶射又は硬質焼付塗装等の方
法によｐ、チタン又はチタン合金表面に硬い異種材料の
皮膜を密着させている。しかし、チタン材は異種材料と
のなじみが悪（、密着不良やはく離等を生じ、今日迄決
定的な硬化処理方法はない。In conventional surface hardening methods for titanium or titanium alloys, as described above, a hard film of a different material is adhered to the surface of titanium or titanium alloys by plating, thermal spraying, hard baking, or other methods. However, titanium materials have poor compatibility with dissimilar materials (causing poor adhesion, peeling, etc.), and to date there is no definitive hardening treatment method.
また、チタン合金線硬化処理として一定温度に熱処理す
ることによって硬度が上昇するが、十分な硬度を得るこ
とはできない。Further, although the hardness is increased by heat treatment at a constant temperature as a titanium alloy wire hardening treatment, sufficient hardness cannot be obtained.
本発明は、以上に鑑みはく離の問題が発生せず十分な硬
度をもつ硬化層を表面に形成することができるチタン合
金の表面処理方法を提供しようとするものである。In view of the above, it is an object of the present invention to provide a method for surface treatment of titanium alloys, which can form a hardened layer with sufficient hardness on the surface without causing the problem of peeling.
本発明のチタン合金材の表面処理方法は、チタン合金材
の表面に通常の熱処理温度より低温の時効処理を行ない
、同チタン合金材の表面に硬化層を形成させるようにし
た。In the method for surface treatment of a titanium alloy material of the present invention, the surface of the titanium alloy material is subjected to aging treatment at a temperature lower than the normal heat treatment temperature to form a hardened layer on the surface of the titanium alloy material.
本発明では、チタン合金材の表面に通常の熱処理温度よ
り低く、かつ長時間の低温時効処理を行なうことによっ
て、チタン合金材の表面に硬化層が析出され、硬度の高
い硬化層が形成される。この硬化層は母材と同じくチタ
ン合金であるために、はく離の問題が生じない。In the present invention, a hardened layer is precipitated on the surface of the titanium alloy material by subjecting the surface of the titanium alloy material to low-temperature aging treatment at a temperature lower than the normal heat treatment temperature and for a long time, thereby forming a hardened layer with high hardness. . Since this hardened layer is made of a titanium alloy like the base material, there is no problem with peeling.
また、硬化処理するチタン合金材の表面以外の温度を低
く保つ場合には、チタン合金内部にじん性を保持させて
表面に硬化層を形成することもできる。Further, when the temperature of the surface of the titanium alloy material to be hardened is kept low, it is also possible to form a hardened layer on the surface while maintaining the toughness inside the titanium alloy.
本発明の方法に用いられる装置の１例を第１図ｔ″）′
Ｔ。An example of the apparatus used in the method of the present invention is shown in FIG.
T.
ピ仮勤する。Pi works temporarily.
ｌは処理されるチタン合金材で、硬化層２を形成すべき
一方の表面１ａの部分に接して、ヒータ。1 is a titanium alloy material to be treated, and a heater is placed in contact with a portion of one surface 1a on which the hardened layer 2 is to be formed.
高周波加熱装置、バーナ等の加熱装置３を備えておル、
反対側の他方の表面ｌｂは適宜冷却されて、その温度が
室温に保たれるようになっている。加熱装置３を、平面
形状として平板状のチタン合金材１を加熱するようにす
ることができ、また円筒状内面として円筒状のチタン合
金部材１の表面を処理するようにすることもできる。Equipped with a heating device 3 such as a high frequency heating device and a burner,
The other surface lb on the opposite side is appropriately cooled so that its temperature is maintained at room temperature. The heating device 3 can have a planar shape to heat the flat titanium alloy material 1, or can have a cylindrical inner surface to treat the surface of the cylindrical titanium alloy member 1.
本発明の方法に用いられる装置の他の例を、第２図によ
って説明する。Another example of the apparatus used in the method of the present invention will be explained with reference to FIG.
本装置は、前記第１図に示す装置のチタン合金材１の一
方の表面１ａに接する加熱装置を冷却装置３′に代え、
他方の表面に接する加熱装置４を設けた。This device replaces the heating device in contact with one surface 1a of the titanium alloy material 1 of the device shown in FIG. 1 with a cooling device 3',
A heating device 4 was provided in contact with the other surface.
本発明の第１の実施例では、前記第１図に示される装置
を用い、チタン合金材１としてＴ１−１０Ｖ −２Ｆｅ
−３ＡＡ’ の溶体化処理材を用い、表面１ｂは室
温に保ち加熱装置３によりて表面１ａを通常の熱処理温
度４５０℃より低い３００℃〜４００℃の範囲で均一に
４時間加熱して時効処理を行なう。In the first embodiment of the present invention, the apparatus shown in FIG. 1 is used, and the titanium alloy material 1 is T1-10V-2Fe
-3AA' solution-treated material is used, surface 1b is kept at room temperature, and surface 1a is heated uniformly for 4 hours in the range of 300 to 400 °C, which is lower than the normal heat treatment temperature of 450 °C, for 4 hours for aging treatment. Do this.
本実施例においては、上記時効硬化処理によって、チタ
ン合金材１の一方の表面１ａ上に硬化層２が形成され、
それ以外の部分はチタン合金材１は影響を受けることな
くじん性が保持されると共に、形成された硬化層２とチ
タン合金材１の他の部分の母材は同じくチタン合金であ
るために、はく離の問題が生ずることがない。In this example, a hardened layer 2 is formed on one surface 1a of the titanium alloy material 1 by the age hardening treatment,
In other parts, the titanium alloy material 1 maintains its toughness without being affected, and since the formed hardened layer 2 and the base material of the other parts of the titanium alloy material 1 are also titanium alloy, No peeling problems occur.
本発明の第２の実施例では、チタン合金材１として第１
の実施例と同様にＴｉ −１０Ｖ −２Ｆｅ −３ＡＪ
の溶体化処理材を用い、第２図に示される装置によって
、チタン合金材１の他方の表面１ｂを加熱装置４によっ
てチタン合金材１の硬化処理が行なわれる５２５℃に加
熱し、一方の表面１ａを第１の実施例と同様に３００℃
〜４００℃の範囲の均一ガ温度となるように冷却装置３
′によって冷却し、この処理を４時間行なった。In the second embodiment of the present invention, the first titanium alloy material 1 is
Similar to the example of Ti -10V -2Fe -3AJ
Using the solution treatment material shown in FIG. 1a at 300°C as in the first example.
Cooling device 3 to maintain a uniform gas temperature in the range of ~400°C.
This treatment was carried out for 4 hours.
本実施例では、時効効果処理によって、表面１ａに硬化
層２が形成されると共に、同硬化層２以外の部分は硬化
処理が行なわれる。しかも、硬化層２と他の部分は同じ
くチタン合金であるために、はく離の問題が生ずること
がない。In this embodiment, a hardened layer 2 is formed on the surface 1a by aging effect treatment, and the other portions other than the hardened layer 2 are hardened. Moreover, since the hardened layer 2 and other parts are also made of titanium alloy, there is no problem of peeling.
前記第１及び第２の実施例における硬化層２の硬さと処
理時間との関係を、通常の同チタン合金材の熱処理の場
合と共に第３図に示す。第３図には、前記実施例におい
て、チタン合金材１の一方の表面１ａの温度を均一に３
００℃、３７５℃、４００℃とした場合が示されている
。４時間以上これら温度で時効処理した場合、通常の熱
処理条件（第３図では４５０℃、５２５℃の場合を示す
）の場合に比較して、硬化層２の硬さが十分に高められ
ることが示されている。The relationship between the hardness of the hardened layer 2 and the treatment time in the first and second embodiments is shown in FIG. 3 together with the case of the usual heat treatment of the same titanium alloy material. FIG. 3 shows that in the above embodiment, the temperature of one surface 1a of the titanium alloy material 1 is uniformly adjusted by 3.
Cases of 00°C, 375°C, and 400°C are shown. When aging treatment is performed at these temperatures for 4 hours or more, the hardness of the hardened layer 2 can be sufficiently increased compared to normal heat treatment conditions (Figure 3 shows cases of 450°C and 525°C). It is shown.
また、通常の熱処理の場合では、処理時間が１時間程度
以後は、処理時間を長くしても硬化層の硬さの増加は見
られないが、本発明の時効処理の場合には、処理時間の
増加と共に硬化層の硬さが増大し、処理時間の長さを適
当に選定することによりて、所望の硬さをもつ硬化層を
得ることができることが第３図に示されている。In addition, in the case of normal heat treatment, no increase in the hardness of the hardened layer is observed after the treatment time is about 1 hour, even if the treatment time is increased, but in the case of the aging treatment of the present invention, the hardness of the hardened layer does not increase after the treatment time FIG. 3 shows that the hardness of the hardened layer increases as the hardness increases, and that by appropriately selecting the length of treatment time, a hardened layer with a desired hardness can be obtained.
また更に、第３図には、２００℃で時効処理した場合が
示されているが、２００℃の処理では、所定の硬度を得
るだめの処理時間を長（必要とし、時間の短縮の観点か
らは３００℃±５０℃〜４００℃での時効処理を行なう
ことが有利である。Furthermore, although Fig. 3 shows the case of aging treatment at 200°C, treatment at 200°C requires a long treatment time to obtain the desired hardness, and from the viewpoint of shortening the time. It is advantageous to carry out aging treatment at 300°C±50°C to 400°C.
本発明を、Ｔｉ −１１，５Ｍｏ−６Ｚｒ −４，５８
ｎ （β１型）合金材に適用した場合の、硬化層の硬さ
と処理時間の関係を、通常の同チタン合金の熱処理（４
５０℃〜５３８℃）の場合と共に第４図に示す。The present invention is based on Ti-11,5Mo-6Zr-4,58
n (β1 type) alloy material, the relationship between the hardness of the hardened layer and the treatment time was compared with the normal heat treatment (4) of the same titanium alloy.
50° C. to 538° C.) is shown in FIG.
第４図においても、適当な処理時間をとれば、通常の熱
処理（第４図では４５５℃、５３８℃の場合を示す）の
場合より硬化層の硬さを高くすることが示されている。FIG. 4 also shows that if an appropriate treatment time is taken, the hardness of the hardened layer can be made higher than in the case of normal heat treatment (FIG. 4 shows cases of 455° C. and 538° C.).
なお、前記第１及び第２の実施例で用いられたｆｌ１７
合金材はＴｉ −１０Ｖ −２Ｆｅ −３ｋｌであシ、
第４図に示す場合には、Ｔｉ −１１，５Ｍｏ −６２
ｒ −４，５８ｎ （β■型）を用いているが、その他
、例えば下記の材料の析出硬化型のチタン合金材に本発
明を適用することが可能である。In addition, the fl17 used in the first and second embodiments
The alloy material is Ti-10V-2Fe-3kl,
In the case shown in Figure 4, Ti -11,5Mo -62
Although r -4,58n (β■ type) is used, the present invention can be applied to other precipitation hardening titanium alloy materials, such as the following materials.
ａ） Ｔｉ −６ＡＩ −６Ｖ −２Ｓｌ）ｂ）
Ｔｉ −８Ｍｏ −ｓｖ−２Ｆｅ −３ＡＪ？ｃ）
Ｔｉ −６ＡＩ −２８ｎ −４Ｚｒ −６Ｍ。a) Ti-6AI-6V-2Sl)b)
Ti-8Mo-sv-2Fe-3AJ? c)
Ti-6AI-28n-4Zr-6M.
ａ） Ｔｉ−１３Ｖ−１１Ｃｒ−３ＡＡ！ｅ） Ｔ
ｉ−５ＡＪ−２ＳＴｉ−５ＡＪ−２Ｓｎ−２Ｚｒ−４−
１７）ｆ） ＩＭＩ８２９（Ｔｉ−５，５ＡＪ−３，
５Ｓｎ−３Ｚｒ−ＩＮｂ−０，３Ｍｏ−０，３Ｓｉ）（
ｇ） ＩＭＩ８３４（Ｔｉ−５，５ＡＪ−４−５Ｓｎ−
４２ｒ −０，４Ｍｏ−０，８Ｎｂ−０，４Ｓｉ）（ｈ
） その他α＋β型及びβ型合金で溶体化処理及び時
効処理の可能なチタン合金。a) Ti-13V-11Cr-3AA! e) T
i-5AJ-2STi-5AJ-2Sn-2Zr-4-
17) f) IMI829 (Ti-5, 5AJ-3,
5Sn-3Zr-INb-0,3Mo-0,3Si)(
g) IMI834 (Ti-5,5AJ-4-5Sn-
42r-0,4Mo-0,8Nb-0,4Si)(h
) Other α+β type and β type titanium alloys that can be solution-treated and aged.
々おまた、本発明において、各チタン合金材に対して時
効処理を行なう温度は、当該チタン合金材の通常の熱処
理温度より低く選定され、またその処理時間は求められ
る硬化層の硬さに応じて選定されるが、第３図及び第４
図に示されるように、処理時間を長くすることによって
硬化層の硬さを高くすることができ、広い範囲にわたり
て所望の硬さをもつチタン合金材の硬化層を得ることが
できる。Furthermore, in the present invention, the temperature at which the aging treatment is performed on each titanium alloy material is selected to be lower than the normal heat treatment temperature for the titanium alloy material, and the treatment time is determined depending on the required hardness of the hardened layer. Figures 3 and 4
As shown in the figure, the hardness of the hardened layer can be increased by increasing the treatment time, and a hardened layer of titanium alloy material having a desired hardness over a wide range can be obtained.
チタン合金材は表面硬化を行なうことが困難であるため
回転部位や摺動部位には使用することができなかったが
、本発明によって、はく離することがない硬化層をチタ
ン合金材の所望の部分に形成することができ、回転部位
や摺動部位にチタン合金材を使用することができるよう
になり、製品の軽量化及び耐食性の向上等を図ることが
できる。Titanium alloy materials cannot be used for rotating or sliding parts because it is difficult to surface harden them. However, with the present invention, a hardened layer that does not peel off can be applied to desired parts of titanium alloy materials. This makes it possible to use titanium alloy materials for rotating parts and sliding parts, making it possible to reduce the weight of the product and improve its corrosion resistance.
第１図は本発明を実施するだめの装置の１例の説明図、
第２図は本発明を実施するための装置の他の例の説明図
、第３図は本発明の第１及び第２の実施例による硬化層
の硬さと処理時間の関係を通常の熱処理条件の場合と共
に示すグラフ、第４図は本発明による他の硬化層の硬さ
と処理時間の関係を通常の熱処理条件の場合と共に示す
グラフである。
１・・・チタン合金材、 Ｉａ、ｌｂ・・・チタン合
金材の表面。
２・・・硬化層、 ３・・・加熱装置。
３・・・冷却装置、 ４・・・加熱装置。FIG. 1 is an explanatory diagram of an example of a device for carrying out the present invention;
FIG. 2 is an explanatory diagram of another example of the apparatus for carrying out the present invention, and FIG. 3 shows the relationship between the hardness of the hardened layer and the processing time according to the first and second embodiments of the present invention under normal heat treatment conditions. FIG. 4 is a graph showing the relationship between the hardness of another hardened layer according to the present invention and processing time, together with the case of normal heat treatment conditions. 1...Titanium alloy material, Ia, lb...Surface of titanium alloy material. 2... Hardened layer, 3... Heating device. 3... Cooling device, 4... Heating device.
Claims (1)
処理を行ない、同チタン合金材の表面に硬化層を形成さ
せることを特徴とするチタン合金の表面処理方法。A method for surface treatment of a titanium alloy, which comprises subjecting the surface of the titanium alloy material to aging treatment at a temperature lower than the normal heat treatment temperature to form a hardened layer on the surface of the titanium alloy material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17012490A JPH0459954A (en) | 1990-06-29 | 1990-06-29 | Surface treatment for titanium alloy material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17012490A JPH0459954A (en) | 1990-06-29 | 1990-06-29 | Surface treatment for titanium alloy material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0459954A true JPH0459954A (en) | 1992-02-26 |
Family
ID=15899091
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17012490A Pending JPH0459954A (en) | 1990-06-29 | 1990-06-29 | Surface treatment for titanium alloy material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0459954A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104878330A (en) * | 2015-05-12 | 2015-09-02 | 沈阳航空航天大学 | Method for optimizing repaired tissue of large workpiece based on local heat treatment realized by induction heating |
-
1990
- 1990-06-29 JP JP17012490A patent/JPH0459954A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104878330A (en) * | 2015-05-12 | 2015-09-02 | 沈阳航空航天大学 | Method for optimizing repaired tissue of large workpiece based on local heat treatment realized by induction heating |
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