EFFECT OF Mg AND δ-PHASE ON MECHANICAL PROPERTIES OF ALLOY GH169(INCONEL718)

作     者：DONG Jianxin XIE Wei XU Zhichao XIE Xishan ZHANG Shouhua 

作者机构：University of Science and Technology BeijingBeijingChina 

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

年 卷 期：1993年第6卷第6期

页      面：405-409页

核心收录：

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

主　　题：superalloy GH169 mechanical property δ-phase Mg creep/fatigue interaction craek propagation rate 

摘      要：Micro-alloying of Mg,ranged from 30 to 70 ppm,may improve the high temperature ductility,stress rupture,especially,certain important mechanical properties,such as cyclic stress rupture,creep/fatigue interaction and crack propagation *** quantity, morphology and distribution of δ-phase may obviously influence the notched cyclic stress rup- ture *** relevant microstructure shows that the Mg may also influence to certain extent on the feature of δ-***,to keep the Mg and δ-phase under control may further im- prove the mechanical properties of alloy GH169.