SU691499A1 - Method of thermal treatment of titanium and its alloys - Google Patents

Method of thermal treatment of titanium and its alloys

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Publication number
SU691499A1
SU691499A1 SU731905984A SU1905984A SU691499A1 SU 691499 A1 SU691499 A1 SU 691499A1 SU 731905984 A SU731905984 A SU 731905984A SU 1905984 A SU1905984 A SU 1905984A SU 691499 A1 SU691499 A1 SU 691499A1
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SU
USSR - Soviet Union
Prior art keywords
alloys
titanium
thermal treatment
art
gas
Prior art date
Application number
SU731905984A
Other languages
Russian (ru)
Inventor
Николай Федорович Аношкин
Светлана Павловна Щелконогова
Анна Александровна Гельман
Галина Васильевна Голубева
Original Assignee
Предприятие П/Я Г-4361
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Publication date
Application filed by Предприятие П/Я Г-4361 filed Critical Предприятие П/Я Г-4361
Priority to SU731905984A priority Critical patent/SU691499A1/en
Application granted granted Critical
Publication of SU691499A1 publication Critical patent/SU691499A1/en

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Description

II

Изобретение относитс  к металлургии, а именно к термообработке титана и его сплавов .IThis invention relates to metallurgy, namely to the heat treatment of titanium and its alloys .I

Известен способ обработки металлов н сплавов в вакууме с разрежением Ю 10 мм рт. ст. при температуре 0,4-0,8 от температуры плавлени  в течение времени , достаточного дл  заращивани  пустот, пор, мнкротрещин в материале 1 Этот способ имеет следующие недостатки:There is a method of processing metals n alloys in vacuum with a vacuum of 10 mm Hg. Art. at a temperature of 0.4-0.8 from the melting temperature for a time sufficient for the overgrowing of voids, pores, cracks in material 1 This method has the following disadvantages:

неизвестно .врем , необходимое дл  .устранени  окисных пленок и тонких газонасыщенных слоев, имеющихс  на поверхности деформированных полуфабрикатов и существенно вли ющих на свойства металла;the time required for removing the oxide films and thin gas-saturated layers on the surface of the deformed semi-finished products and significantly affecting the properties of the metal is unknown;

нагрев титана в вакууме при Р . мм рт. ст. приводит к окислению поверхности , а при больших степен х разрежени  ( мм рт. ст.) - к растравливанию поверхности.heating of titanium in vacuum at P. mm Hg Art. leads to oxidation of the surface, and at large degrees of rarefaction (mm Hg. Art.) - to etching the surface.

Целью изобретени   вл етс  удаление окисных пленок и газонасыщенных слоев на полуфабрикатах и детал х из титанов1,1Х сплавов без растравливани  поверхности.The aim of the invention is the removal of oxide films and gas-saturated layers on semi-finished products and parts made of titanium 1.1 X alloys without surface etching.

Цель достигаетс  путем термообработки полуфабрикатов или деталей с окисной пленкой или с газонасыщенным слоем в атмосфере очищенных инертных газов с . содержанием кислорода менее 0,003% при давлении 0,1-20 мм рт. ст. и при температурах, близких к температуре полиморфного превращени , в течение 2-15 ч.The goal is achieved by heat treatment of semi-finished products or parts with an oxide film or with a gas-saturated layer in an atmosphere of purified inert gases. oxygen content less than 0.003% at a pressure of 0.1-20 mm Hg. Art. and at temperatures close to the polymorphous transformation temperature for 2-15 hours.

Пример. ОбразЩ) с газонасыщенных слоем толщиной 40-80 мкм сплавов ОТ4 и ВТ22 подвергают нагреву до 850°С в течение 4 и 8 ч в атмосфере очищенного аргона с содержанием кислорода менее 0,003%. Низкое содержание активных газов обеспечиваетс  путем двойной откачки печи до степени разрежени  0,1 мм рт. ст. с промежуточным наполнением ее очищенным аргоном при давлении 5 мм рт. ст.Example. SUBSTANCE: gas-saturated layer with a thickness of 40-80 microns of OT4 and VT22 alloys is heated to 850 ° C for 4 and 8 hours in an atmosphere of purified argon with an oxygen content of less than 0.003%. The low content of active gases is provided by double pumping of the furnace to a degree of dilution of 0.1 mm Hg. Art. with intermediate filling it with purified argon at a pressure of 5 mm Hg. Art.

Применение инертной среды по предлагаемому crtoco6y позвол ет использовать низкие степени разрежени , обеспечива  при этом содержание активнь1Х газовых примесей (OjThe use of an inert medium according to the proposed crtoco6y allows the use of low degrees of rarefaction, while ensuring the content of active gaseous impurities (Oj

и д) на уровне вакуума 10 мм рт.ст. В результате не происходит ни окислени , ни растравливани  поверхности. Устранение окисных пленок и газонасыщенного сло  достнга; етс  сочетанием указанных температ)ф с длительными выдержками и осуществл етс  заand e) at a vacuum level of 10 mm Hg. As a result, neither oxidation nor surface etching occurs. Elimination of oxide films and gas saturated layer; a combination of these temperatures) f with long exposures and is carried out in

691499691499

счет растворени  окислов и диффузии кисло рода из периферийных слоев в центральные.by dissolving oxides and diffusing oxygen from the peripheral to the central layers.

В табл. 1 приведены сравнительные данные по величине микротвердости, а в табл. 2 сравнительные данные по механическим свойствам .In tab. 1 shows comparative data on the magnitude of microhardness, and table. 2 comparative data on mechanical properties.

Таблица 1Table 1

SU731905984A 1973-03-26 1973-03-26 Method of thermal treatment of titanium and its alloys SU691499A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU731905984A SU691499A1 (en) 1973-03-26 1973-03-26 Method of thermal treatment of titanium and its alloys

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU731905984A SU691499A1 (en) 1973-03-26 1973-03-26 Method of thermal treatment of titanium and its alloys

Publications (1)

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SU691499A1 true SU691499A1 (en) 1979-10-15

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Family Applications (1)

Application Number Title Priority Date Filing Date
SU731905984A SU691499A1 (en) 1973-03-26 1973-03-26 Method of thermal treatment of titanium and its alloys

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SU (1) SU691499A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4528043A (en) * 1982-05-14 1985-07-09 Rolls-Royce Limited Surface oxide layer treatment

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4528043A (en) * 1982-05-14 1985-07-09 Rolls-Royce Limited Surface oxide layer treatment

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