SU534518A1 - The method of thermomechanical processing of alloys based on titanium - Google Patents

The method of thermomechanical processing of alloys based on titanium

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Publication number
SU534518A1
SU534518A1 SU2064756A SU2064756A SU534518A1 SU 534518 A1 SU534518 A1 SU 534518A1 SU 2064756 A SU2064756 A SU 2064756A SU 2064756 A SU2064756 A SU 2064756A SU 534518 A1 SU534518 A1 SU 534518A1
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SU
USSR - Soviet Union
Prior art keywords
alloys
alloy
aging
deformation
titanium
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SU2064756A
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Russian (ru)
Inventor
Александр Михайлович Легкодух
Юрий Петрович Коростелев
Аркадий Львович Гавзе
Валентина Ивановна Прибылова
Борис Иванович Береснев
Дмитрий Константинович Булычев
Галина Алексеевна Пегушина
Юрий Петрович Чернышев
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Предприятие П/Я В-2652
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Priority to SU2064756A priority Critical patent/SU534518A1/en
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Publication of SU534518A1 publication Critical patent/SU534518A1/en

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Claims (2)

Изобретение относитс  к области металлургии , а именно к TepNOinecKuE обработке титановых сплавов, и может быть применено при изготовлении т жело нагруженных деталей из титановых сплавов критического состава. Известен способ термомеханической обработки сплавов на основе титана, заключаю шийс  в нагреве до температур (о(.1- области , деформахщи со степенью 50-65%, закалке и последующем стандартном старении 1 . Однако этот способ не применим к сплавам критического состава. Известен способ термомеханической обра ботки сплавов на основе титана, по которому сплав закаливают из J -области, затем подвергают холодной деформации и осуществл ют старение при 400 С в течение 4-6 час 2. Однако сплавы критического состава , обработанные по известному способу, имеют неудовлетворительные характеристики пластичности. Образцы из сплава ВТ22 пос ле такой обработки имеют следующие свойства: Предел прочности, кг/мм Предел текучести, кг/мм139 Относительное удлинение, %2,6 Относительное сужение, %7,1 Цель изобретени  - повыщение механических свойств сплавов критического состава . Дл  этого сплав накаливают из ( cji, + + ) области, затем подвергают холодной де формации методом гидроэкструзии при давлении 2-20 кбар со степенью деформации 10-50%, а старение провод т при 45О- 550 С в течение 1-4 час. Гидроэкструзи  дл  деформации титановых сплавов критического состава позвол ет получить при комнатной температуре значительные степени обжати  (Ю-50%), не достшкимые другими способами пластической деформации. Пластическа  деформаци  титановых сплавов критического состава, вакаленных из ( с6 + ) области, в услови х гидроэкструзии приводит к образованию в структуре механически нестабильной И фазы . По вление механически нестабильной jft -4азы приводит при последующем старении к сокращению времени и более равномерному протеканию процесса распада в гидроекструдированном сплаве. Это обуспавливает получение высоких ппазтических свойств сплавов, обработанных по предлагаемому способу, при одновременном повышении их прочностных характеристик. Способ повышает предел прочности сплава ВТ22 до 135-155 кг/мм , предел текучести до 13О-150 кг/мм , относительное удлинение до 9-12%, относительное сужение до 30-50%. Пример 1. Обрабатывают образцы из сплава ВТ22, Сплав закаливают с 650 в воду, затем деформируют гидро экструзией при давлении 4-7 кбар со степенью 10%. Старение провод т при 5ОО С в течение 4 час. Результаты испытаний: Предел прочности, кг/мм Предел текучести кг/мм Относительное удлинение, Относительное сужение, % 2, Обрабатывают образцы Пример закаливают с 700 из сплава ВТ22. Сплав затем деформируют гидроэкструзией при да лении 7-8 кбар со степенью ЗО%. Старени провод т при 5ОО С в течение 4 час. Результаты испытаний: кг/мм Предел прочности. Предел текучести, кг/мм Относительное удлинение, °А Относительное сужение, % Формула изобретени  Способ термомеханической обработки сплавов на основе титана, включающий закалку, деформацию при комнатной температуре и старение, отличающийс  тем, что, с целью повышени  механических свойств сплавов критического состава, закалку провод т КЗ ( oi + ) области, деформацию осуществл ют гидроэкструзией при давлении 2-20 кбар со степенью деформаций 10-50%, а старение провод т при 450550 С. Источники информации, прин тые во внимание при экспертизе; 1.Бернщтейн М, П, Термомеханическа  обработка металлов и сплавов т. 2, 1968 г, стр. 1137-1138, The invention relates to the field of metallurgy, namely to the TepNOinecKuE treatment of titanium alloys, and can be applied in the manufacture of heavily loaded parts from titanium alloys of critical composition. The known method for the thermomechanical treatment of titanium-based alloys, concluded in heating to temperatures (about (.1- area, deforming with a degree of 50-65%, quenching and subsequent standard aging 1. However, this method is not applicable to alloys of critical composition. The known method thermomechanical processing of titanium-based alloys, in which the alloy is quenched from the J-region, is then subjected to cold deformation and aging at 400 ° C for 4-6 hours 2. However, the alloys of critical composition, processed by a known method, have poor plasticity characteristics. Samples of VT22 alloy after such treatment have the following properties: Tensile strength, kg / mm Yield strength, kg / mm139 Relative elongation,% 2.6 Relative narrowing,% 7.1 The purpose of the invention is to increase the mechanical properties of critical alloys For this, the alloy is heated from the (cji, + +) region, then subjected to cold deformation by hydroextrusion at a pressure of 2–20 kbar with a degree of deformation of 10–50%, and aging is carried out at 45– 550 ° C for 1–4 hour. Hydroextrusions for the deformation of titanium alloys with a critical composition make it possible to obtain, at room temperature, significant degrees of reduction (Yu-50%), which are not sufficient by other methods of plastic deformation. Plastic deformation of titanium alloys of critical composition, rolled from the (c6 +) region, under hydroextrusion conditions leads to the formation of a mechanically unstable AND phase in the structure. The appearance of the mechanically unstable jft-4az leads, with subsequent aging, to a reduction in the time and a more uniform process of decomposition in the hydrostructured alloy. This makes it possible to obtain high-grade properties of the alloys processed by the proposed method, while at the same time increasing their strength characteristics. The method increases the ultimate strength of the alloy VT22 to 135-155 kg / mm, the yield strength up to 13–150 kg / mm, the relative elongation to 9–12%, the relative narrowing to 30–50%. Example 1. Samples of the VT22 alloy are processed. The alloy is quenched from 650 to water, then deformed by hydro-extrusion at a pressure of 4-7 kbar with a degree of 10%. Aging is carried out at 5 ° C for 4 hours. Test results: Strength limit, kg / mm Yield strength kg / mm Relative elongation, Relative constriction,% 2, Samples are processed Example quenched with 700 from alloy VT22. The alloy is then deformed by hydroextrusion at a pressure of 7–8 kbar with a degree of 30%. Aging is carried out at 5OO C for 4 hours. Test results: kg / mm Strength limit. Yield strength, kg / mm Relative elongation, ° A Relative constriction,% Claims of the invention A method for the thermomechanical treatment of titanium-based alloys, including quenching, deformation at room temperature and aging, characterized in that, in order to improve the mechanical properties of critical alloys, quenching short-circuit (oi +) areas are performed, deformation is performed by hydro-extrusion at a pressure of 2–20 kbar with a degree of deformation of 10–50%, and aging is carried out at 450550 ° C. Sources of information taken into account during the examination; 1. Bernschtein, M, P, Thermomechanical processing of metals and alloys, vol. 2, 1968, p. 1137-1138, 2.Термопластическое упрочнение сталей и титановых сплавов изд-во Наука Москва , 1971, стр. 110.2. Thermoplastic hardening of steels and titanium alloys Publishing House Science Moscow, 1971, p. 110.
SU2064756A 1974-10-03 1974-10-03 The method of thermomechanical processing of alloys based on titanium SU534518A1 (en)

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WO2012012102A1 (en) * 2010-07-19 2012-01-26 Ati Properties, Inc. Processing of alpha/beta titanium alloys
US8499605B2 (en) 2010-07-28 2013-08-06 Ati Properties, Inc. Hot stretch straightening of high strength α/β processed titanium
CN103272864A (en) * 2013-05-17 2013-09-04 贵州顶效经济开发区沈兴实业有限责任公司 Processing method of TC21 high-strength and high-toughness titanium alloy wire
US8568540B2 (en) 2004-05-21 2013-10-29 Ati Properties, Inc. Metastable beta-titanium alloys and methods of processing the same by direct aging
US8652400B2 (en) 2011-06-01 2014-02-18 Ati Properties, Inc. Thermo-mechanical processing of nickel-base alloys
US9050647B2 (en) 2013-03-15 2015-06-09 Ati Properties, Inc. Split-pass open-die forging for hard-to-forge, strain-path sensitive titanium-base and nickel-base alloys
US9192981B2 (en) 2013-03-11 2015-11-24 Ati Properties, Inc. Thermomechanical processing of high strength non-magnetic corrosion resistant material
US9206497B2 (en) 2010-09-15 2015-12-08 Ati Properties, Inc. Methods for processing titanium alloys
US9777361B2 (en) 2013-03-15 2017-10-03 Ati Properties Llc Thermomechanical processing of alpha-beta titanium alloys
US9796005B2 (en) 2003-05-09 2017-10-24 Ati Properties Llc Processing of titanium-aluminum-vanadium alloys and products made thereby
US9869003B2 (en) 2013-02-26 2018-01-16 Ati Properties Llc Methods for processing alloys
US10053758B2 (en) 2010-01-22 2018-08-21 Ati Properties Llc Production of high strength titanium
US10094003B2 (en) 2015-01-12 2018-10-09 Ati Properties Llc Titanium alloy
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US10513755B2 (en) 2010-09-23 2019-12-24 Ati Properties Llc High strength alpha/beta titanium alloy fasteners and fastener stock
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US9796005B2 (en) 2003-05-09 2017-10-24 Ati Properties Llc Processing of titanium-aluminum-vanadium alloys and products made thereby
US10422027B2 (en) 2004-05-21 2019-09-24 Ati Properties Llc Metastable beta-titanium alloys and methods of processing the same by direct aging
US9523137B2 (en) 2004-05-21 2016-12-20 Ati Properties Llc Metastable β-titanium alloys and methods of processing the same by direct aging
US8568540B2 (en) 2004-05-21 2013-10-29 Ati Properties, Inc. Metastable beta-titanium alloys and methods of processing the same by direct aging
US8623155B2 (en) 2004-05-21 2014-01-07 Ati Properties, Inc. Metastable beta-titanium alloys and methods of processing the same by direct aging
US10053758B2 (en) 2010-01-22 2018-08-21 Ati Properties Llc Production of high strength titanium
AU2011280078B2 (en) * 2010-07-19 2015-03-12 Ati Properties, Inc. Processing of alpha/beta titanium alloys
US10144999B2 (en) 2010-07-19 2018-12-04 Ati Properties Llc Processing of alpha/beta titanium alloys
US9765420B2 (en) 2010-07-19 2017-09-19 Ati Properties Llc Processing of α/β titanium alloys
WO2012012102A1 (en) * 2010-07-19 2012-01-26 Ati Properties, Inc. Processing of alpha/beta titanium alloys
US9255316B2 (en) 2010-07-19 2016-02-09 Ati Properties, Inc. Processing of α+β titanium alloys
US8834653B2 (en) 2010-07-28 2014-09-16 Ati Properties, Inc. Hot stretch straightening of high strength age hardened metallic form and straightened age hardened metallic form
US8499605B2 (en) 2010-07-28 2013-08-06 Ati Properties, Inc. Hot stretch straightening of high strength α/β processed titanium
US10435775B2 (en) 2010-09-15 2019-10-08 Ati Properties Llc Processing routes for titanium and titanium alloys
US9624567B2 (en) 2010-09-15 2017-04-18 Ati Properties Llc Methods for processing titanium alloys
US9206497B2 (en) 2010-09-15 2015-12-08 Ati Properties, Inc. Methods for processing titanium alloys
US10513755B2 (en) 2010-09-23 2019-12-24 Ati Properties Llc High strength alpha/beta titanium alloy fasteners and fastener stock
US10287655B2 (en) 2011-06-01 2019-05-14 Ati Properties Llc Nickel-base alloy and articles
US8652400B2 (en) 2011-06-01 2014-02-18 Ati Properties, Inc. Thermo-mechanical processing of nickel-base alloys
US9616480B2 (en) 2011-06-01 2017-04-11 Ati Properties Llc Thermo-mechanical processing of nickel-base alloys
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US9777361B2 (en) 2013-03-15 2017-10-03 Ati Properties Llc Thermomechanical processing of alpha-beta titanium alloys
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US11111552B2 (en) 2013-11-12 2021-09-07 Ati Properties Llc Methods for processing metal alloys
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