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Title: Effect of cryogenic treatment on the plastic property of Ti-6Al-4V titanium alloy

The effect of cryogenic treatment on the plastic property of Ti-6Al-4V plate was studied in the present work. After cryogenic treatment, the low temperature temper at 180 ▭ was conducted in one of the groups and the results were compared with that of the untreated and cryotreated ones. The SLX series program controlled cryogenic equipment was used for the cryogenic treatment. The tensile tests were conducted by universal tensile testing machine and parameters of elongation and area reduction were used to evaluate plastic property. The scanning electron microscope was used to study the morphology of microstructure and fracture surface. The results show that after cryogenic treatment alone the elongation increased 10.6% and the area reduction increased 13.5% while the strength reduced to a small extent. Cryogenic treatment followed with low temperature temper increased the elongation and area reduction just by the extent of 4.7% and 9.5%. It means that the additional low temperature temper after cryogenic is not beneficial to the tensile properties of Ti-6Al-4V alloy. The examination of microstructure by scanning electron microscopy revealed that cryogenic treatment reduced the content of β phase particles which is the main reason for the improvement in plasticity.
Authors:
 [1] ; ; ;  [2] ; ;  [3]
  1. Key Laboratory of Cryogenics, TIPC, Chinese Academy of Sciences, Beijing 100190, China and University of Chinese Academy of Sciences, Beijing 100049 (China)
  2. Key Laboratory of Cryogenics, TIPC, Chinese Academy of Sciences, Beijing 100190 (China)
  3. AVIC Beijing Aeronautical Manufacturing Technology Research Institute, Beijing 100024 (China)
Publication Date:
OSTI Identifier:
22264050
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1574; Journal Issue: 1; Conference: International cryogenic materials conference, Anchorage, AK (United States), 17-21 Jun 2013; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; FRACTURES; MICROSTRUCTURE; PARTICLES; PLASTICITY; SCANNING ELECTRON MICROSCOPY; TENSILE PROPERTIES; TITANIUM ALLOYS