INFLUENCE　OF　ENVIRONMENT　ON　TENSILE　BEHAVIOR　OF　Ni_3Al　SYNTHESIZED　UNDER　COMPRESSION

作     者：LI Gang WANG Zhongguang LI Guangyi(State Key Laboratory of Fatigue and Fracture for Materials,Institute of Metal Research,Chinese Academy of Sciences,Shenyang 110015,China)V.OVCHARENKO(Institute of Strength Physics and Materials Science,Russian Academy of 

作者机构：Inst of Metal Research Chinese Acad of Sciences Shenyang China 

出 版 物：《Acta Metallurgica Sinica(English Letters)》 (金属学报（英文版）)

年 卷 期：1996年第9卷第1期

页      面：12-16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：Ni_3Al synthesis environment tensile behavior 

摘      要：Self propagating high temperature synthesis(SHS) under compression was utilized to obtain an intermetallic compound Ni_3 Al by using elemental *** microstructure of the SHS product was observed by optical microscopy(OM) and scanning electron microscopy(SEM).The results reveal that the SHS Ni3Al is a single-phase polycrystalline alloy wilh LI2 crystal *** tests were conducted from room temperature to 800℃ both in air and in *** results show that the SHS Ni_3Al exhibits an anomalous temperature dependence of ultimate tensile *** ultimate tensile strength in vacuum is much higher than that in air over the whole temperature *** surfaces are characterized by the brittle grain boundary fracture and the intergranular fracture mode can not be affected markedly by the test environment.