Characterization of hot deformation behavior of AA2014 forging aluminum alloy using processing map

作     者：Peng-wei LI Hui-zhong LI Lan HUANG Xiao-peng LIANG Ze-xiao ZHU 李鹏伟;李慧中;黄岚;梁霄鹏;朱泽晓

作者机构：School of Materials Science and Engineering Central South University Changsha 410083 China Key Laboratory of Nonferrous Metal Materials Science and EngineeringMinistry of Education Central South University Changsha 410083 China State Key Laboratory of Powder Metallurgy Central South University Changsha 410083 China 

出 版 物：《Transactions of Nonferrous Metals Society of China》 (中国有色金属学报（英文版）)

年 卷 期：2017年第27卷第8期

页      面：1677-1688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）] 

基　　金：Project(51301209) supported by the National Natural Science Foundation of China 

主　　题：AA2014 aluminum alloy hot deformation behavior constitutive model processing map softening mechanism 

摘      要：The hot deformation behavior of AA2014forging aluminum alloy was investigated by isothermal compression tests attemperatures of350-480°C and strain rates of0.001-1s-1on a *** corresponding microstructures of thealloys under different deformation conditions were studied using optical microscopy(OM),electron back scattered diffraction(EBSD)and transmission electron microscopy(TEM).The processing maps were constructed with strains of0.1,0.3,*** results showed that the instability domain was more inclined to occur at strain rates higher than0.1s-1and manifested in theform of local non-uniform *** the strain of0.7,the processing map showed two stability domains:domain I(350-430°C,0.005-0.1s-1)and domain II(450-480°C,0.001-0.05s-1).The predominant softening mechanisms in both of the twodomains were dynamic *** microstructures were obtained in domain I,and an extended recovery occurred in domainII,which would lead to the potential sub-grain boundaries progressively transforming into new high-angle grain *** hot working parameters for the AA2014forging aluminum alloy were determined to be370-420°C and0.008-0.08s-1.