Microstructure and properties after deformation and aging process of A286 superalloy

作     者：Si-Cheng Liu Yun Gao Zhong-Liang Lin Shuang-Shuang Guo Xiao-Bin Zhang Xiao-Jian Yin 

作者机构：Research Institute of Aerospace Precision Products Co.Ltd 

出 版 物：《Rare Metals》 (稀有金属（英文版）)

年 卷 期：2019年第38卷第9期

页      面：864-870页

核心收录：

学科分类：080503[工学-材料加工工程] 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）] 0802[工学-机械工程] 080201[工学-机械制造及其自动化] 

基　　金：financially supported by the National Natural Science Foundation of China(No. 11502285) 

主　　题：A286 alloy Deformation Aging Precipitate Texture Tensile strength 

摘      要：This study focuses on the effects of different cold-drawing deformations and aging treatments of solid solution A286 *** grain configuration,texture,precipitates and tensile strength of A286 superalloy after different deformations and aging treatments were investigated by optical microscopy(OM),field emission scanning electron microscopy(FESEM),electron back-scattered diffraction(EBSD)and mechanical testing *** grain size and configuration of A286 alloy can hardly be changed during aging *** initially equiaxial and twinned crystals are obvious when deformation is less than30%,while the grain boundaries become blurry and slip bands appear after 35% deformation or more.γ’ phase and Cr-rich carbide are the precipitates of A286 *** each deformation,γ’ phase plays a major role during aging and its amount increases gradually when the aging temperature changes from 650 to 680℃,and a maximum tensile strength appears when following two-stage *** deformation increasing,the amounts of γ’ phase and Crrich carbide increase in varying ***,thewire textures become more obvious,the tensile strength is enhanced and the kernel average misorientation(KAM)increases gradually;the higher KAM of crystal lattices diffuses from the grain boundary to the matrix gradually.