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《Forging & Stamping Technology》 2006-06
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Influence of hot compression parameters on flow stress and microstructure of TA15 alloy

WANG Bin~1,GUO Hong-zhen~1,YAO Ze-kun~1,CHEN Jin-ke~2,LI Peng-chuan~2(1.School of Material Science and Engieering,Northwestern Polytechnical University,Xi'an Shanxi 710072,China;2.China National Erzhong Group Co.,Deyang Sichuan 618013,China)  
The test of the isothermal compression with constant strain rate of TA15 alloy has been studied at the α+β phase region and β phase region in this paper.The stress-strain curves of it have obtained and changing laws of the flow stress and microstructure have been discussed.The results show that the strain rate obviously affects the flow stress of TA15.The extent of the effect of deformation temperature on flow stress is related to the measure of strain rate.The uniform,fine and equiaxed α phase structure is achieved at lower temperature and faster strain rate.But the structure was coarsened definitely at slow strain rate.The optimum isothermal compression temperature is between 980℃ and 900℃,the strain rate may be selected within the constant range according to the need of forging forming,structure properties and productivity.Under good forming condition of forgings,strain rate may be appropriately raised.
【CateGory Index】: TG113
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