Functionally Graded Ti-50.5Ni Alloy

作     者：Hyun-Gon Kim Ju-Young Choi Jung-Moo Lee Cha-Yong Lim Suk-Bong Kang Yinong Liu Tae-Hyun Nam 

作者机构：Division of Advanced Materials Engineeringi-cube center and ERIGyeongsang National University900 Gajwa-dongJinjuGyeongnam 660-701Korea Advanced Materials Research DivisionKorean Institute of Machinery and Materials66 Sangnam-dongChangwon 641-831Korea Department of Mechanical EngineeringUniversity of Western AustraliaCrawleyWA 6009Australia 

出 版 物：《材料科学与工程学报》 (Journal of Materials Science and Engineering)

年 卷 期：2007年第25卷第6期

页      面：917-921页

核心收录：

学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

主　　题：钛镍合金 位错 温度 延长性能 温度梯度退火处理 

摘      要：Transformation behavior and shape memory characteristics of a temperature gradient annealing(TGA)treated Ti-50.5Ni(at%)alloy have been investigated by means of differential scanning calorimetry(DSC)and thermal cycling tests under constant *** annealing the specimen under the temperature gradient from 823 K to 658 K after solution treatment,the B19 martensitic transformation start temperature changed by 60 K along the length of sample(150mm).Temperature dependence of transformation elongation(dε/dT)of the TGA treated wire was found to be 0.16 %/*** annealing the specimen under the temperature gradient from 823 K to 658 K after 47 % cold working without solution treatment,the B19 martensitic transformation start temperature changed by 61K along the length of sample(150mm).Temperature dependence of transformation elongation(dε/dT)of the TGA treated wire was found to be 0.04 %/*** large decrease in dε/dT by cold working effect suggested that an introduction of dislocation was more effective than precipitates for lowering dε/dT.