EP0664341A1 - Verfahren zur Herstellung eines Werkstückes aus Titan-Legierung nach diesem Verfahren hergestelltes Werkstück aus Titan-Legierung, sowie Halbzeug aus Titan-Legierung - Google Patents

Verfahren zur Herstellung eines Werkstückes aus Titan-Legierung nach diesem Verfahren hergestelltes Werkstück aus Titan-Legierung, sowie Halbzeug aus Titan-Legierung Download PDF

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Publication number
EP0664341A1
EP0664341A1 EP95400118A EP95400118A EP0664341A1 EP 0664341 A1 EP0664341 A1 EP 0664341A1 EP 95400118 A EP95400118 A EP 95400118A EP 95400118 A EP95400118 A EP 95400118A EP 0664341 A1 EP0664341 A1 EP 0664341A1
Authority
EP
European Patent Office
Prior art keywords
titanium alloy
semi
treatment
carried out
beta
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.)
Withdrawn
Application number
EP95400118A
Other languages
English (en)
French (fr)
Inventor
Andre Coulon
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Alstom SA
Original Assignee
GEC Alsthom Electromecanique SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by GEC Alsthom Electromecanique SA filed Critical GEC Alsthom Electromecanique SA
Publication of EP0664341A1 publication Critical patent/EP0664341A1/de
Withdrawn legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C14/00—Alloys based on titanium
    • 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
    • C22F1/16—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of other metals or alloys based thereon
    • C22F1/18—High-melting or refractory metals or alloys based thereon
    • C22F1/183—High-melting or refractory metals or alloys based thereon of titanium or alloys based thereon

Definitions

  • the titanium alloy contains very little oxygen and nitrogen because they form hard and brittle titanium oxides and nitrides during dissolution. This dissolution is necessary to obtain a homogeneous part.
  • an aging treatment is carried out at a temperature of 500 ° to 600 ° C for about 10 h.
  • the method according to the invention making it possible to obtain a part having clearly superior mechanical properties is characterized in that the semi-finished product comprises 0.4% to 0.7% of oxygen and 0.1% to 0.2 % of nitrogen the quantity of oxygen plus nitrogen not being greater than 0.8% and in that the cooling is very rapid at least 200 ° C / h and preferably 400 ° C / h, the aging treatment being carried out between 550 ° C and 650 ° C for a time between 10 minutes and 2 hours sufficient to transform half of the beta titanium into Alpha Prime.
  • the titanium alloy part obtained according to the invention thus comprises 40 to 60% of beta alloy and the complement of alpha prime alloy.
  • the Beta part is very hard and the Alpha-Prime part has excellent ductility.
  • a semi-fine product of metastable beta titanium alloy is manufactured in the following manner.
  • a metastable beta titanium alloy casting is produced by adding 0.4 to 0.7% of oxygen and 0.1 to 0.2% of nitrogen by weight, the sum of oxygen and nitrogen not exceeding 0.8%.
  • an ingot is produced and then the product is produced by forging rolling and then reduced in the form of a bar or round, flat or sheet metal.
  • a solution treatment heat treatment is carried out at a temperature of 800 ° C to 900 ° C.
  • a very rapid cooling of the solution temperature to 500 ° C. is carried out with a speed of at least 200 ° C./h and preferably of at least 400 ° C./h.
  • the semi-finished product always has a metastable Beta structure.
  • the semi-finished product is then forged, stamped or machined to its final geometry.
  • an aging treatment is carried out from 550 ° C to 650 ° C for a period of between 10 minutes and 2 hours.
  • the duration being chosen so that 40 to 60% of the metastable Beta structure transforms into Alpha prime, the rest of the structure becoming Beta stable.
  • the final titanium alloy part has a mixed structure, the Beta part being very hard and the Alpha-prime part having excellent ductibility.
  • the very ductile matrix is thus reinforced by hard slats typical of beta structures.
  • the semi-finished product is manufactured by the founder or blacksmith, then it is transported to the user who manufactures it to give it its final shape.
  • the solution treatment can be done on the semi-finished product or it can be done on the workpiece.
  • the aging treatment could be done on the semi-finished product but in this case the machining is more difficult.
  • the aging treatment will be done on the workpiece.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Forging (AREA)
EP95400118A 1994-01-25 1995-01-20 Verfahren zur Herstellung eines Werkstückes aus Titan-Legierung nach diesem Verfahren hergestelltes Werkstück aus Titan-Legierung, sowie Halbzeug aus Titan-Legierung Withdrawn EP0664341A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9400766 1994-01-25
FR9400766A FR2715410B1 (fr) 1994-01-25 1994-01-25 Procédé de fabrication d'une pièce en alliage de titane et pièce en alliage de titane ainsi fabriquée et produit semi-fini en alliage de titane.

Publications (1)

Publication Number Publication Date
EP0664341A1 true EP0664341A1 (de) 1995-07-26

Family

ID=9459359

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95400118A Withdrawn EP0664341A1 (de) 1994-01-25 1995-01-20 Verfahren zur Herstellung eines Werkstückes aus Titan-Legierung nach diesem Verfahren hergestelltes Werkstück aus Titan-Legierung, sowie Halbzeug aus Titan-Legierung

Country Status (4)

Country Link
US (1) US5545271A (de)
EP (1) EP0664341A1 (de)
JP (1) JPH07252618A (de)
FR (1) FR2715410B1 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6663501B2 (en) 2001-12-07 2003-12-16 Charlie C. Chen Macro-fiber process for manufacturing a face for a metal wood golf club
WO2016040996A1 (en) * 2014-09-19 2016-03-24 Deakin University Methods of processing metastable beta titanium alloys

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU616321A1 (ru) * 1977-02-07 1978-07-25 Предприятие П/Я Г-4361 Лигатура
JPS62127442A (ja) * 1985-11-27 1987-06-09 Sumitomo Metal Ind Ltd チタン合金およびその製造方法
EP0322087A2 (de) * 1987-12-23 1989-06-28 Nippon Steel Corporation Hochfester Titanwerkstoff mit verbesserter Duktilität und Verfahren zur Herstellung dieses Werkstoffs
JPH04176832A (ja) * 1990-11-09 1992-06-24 Murai:Kk 眼鏡用部品及びその製造方法
JPH04184711A (ja) * 1990-11-20 1992-07-01 Kobe Steel Ltd 磁気ディスク用チタン基盤とその製造方法

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2676460B1 (fr) * 1991-05-14 1993-07-23 Cezus Co Europ Zirconium Procede de fabrication d'une piece en alliage de titane comprenant un corroyage a chaud modifie et piece obtenue.
US5201967A (en) * 1991-12-11 1993-04-13 Rmi Titanium Company Method for improving aging response and uniformity in beta-titanium alloys

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU616321A1 (ru) * 1977-02-07 1978-07-25 Предприятие П/Я Г-4361 Лигатура
JPS62127442A (ja) * 1985-11-27 1987-06-09 Sumitomo Metal Ind Ltd チタン合金およびその製造方法
EP0322087A2 (de) * 1987-12-23 1989-06-28 Nippon Steel Corporation Hochfester Titanwerkstoff mit verbesserter Duktilität und Verfahren zur Herstellung dieses Werkstoffs
JPH04176832A (ja) * 1990-11-09 1992-06-24 Murai:Kk 眼鏡用部品及びその製造方法
JPH04184711A (ja) * 1990-11-20 1992-07-01 Kobe Steel Ltd 磁気ディスク用チタン基盤とその製造方法

Non-Patent Citations (6)

* Cited by examiner, † Cited by third party
Title
CHEMICAL ABSTRACTS, vol. 90, no. 2, 8 January 1979, Columbus, Ohio, US; abstract no. 11034, CHUCHURYUKIN, A. D. ET AL: "Master alloy" *
DATABASE WPI Section Ch Week 9232, Derwent World Patents Index; Class M26, AN 92-262244 *
DATABASE WPI Section Ch Week 9233, Derwent World Patents Index; Class L03, AN 92-272304 *
M.J. DONACHIE JR: "TITANIUM - A TECHNICAL GUIDE", ASM, METALS PARK, OHIO, US *
PATENT ABSTRACTS OF JAPAN vol. 011, no. 357 (C - 458) 20 November 1987 (1987-11-20) *
Z. LIU ET AL: "EFFECTS OF OXYGEN AND HEAT TREATMENT ON THE MECHANICAL PROPERTIES OF ALPH AND BETA TITANIUM ALLOYS", METALLURGICAL TRANSACTIONS A. PHYSICAL METALLURGY AND MATERIALS SCIENCE, vol. 19A, NEW YORK US, pages 527 *

Also Published As

Publication number Publication date
FR2715410A1 (fr) 1995-07-28
JPH07252618A (ja) 1995-10-03
US5545271A (en) 1996-08-13
FR2715410B1 (fr) 1996-04-12

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