Enhancing plastic deformability of Mg and its alloys—A review of traditional and nascent developments

作     者：Kenneth Kanayo Alaneme Eloho Anita Okotete 

作者机构：Department of Metallurgical and Materials EngineeringFederal University of TechnologyAkureNigeria African Materials Science Engineering NetworkAMSEN(A Carnegie-IAS RISE Network)AkureNigeria 

出 版 物：《Journal of Magnesium and Alloys》 (镁合金学报（英文）)

年 卷 期：2017年第5卷第4期

页      面：460-475页

核心收录：

学科分类：0806[工学-冶金工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0703[理学-化学] 0801[工学-力学（可授工学、理学学位）] 

主　　题：Mg alloys HCP crystal structure Basal texture Severe plastic deformation Formability 

摘      要：Mg and its alloys have continued to attract interest for several structural and super-sensitive applications because of their light weight and good combination of engineering *** for some of these applications,high plastic deformability is required to achieve desired component shapes and configurations;unfortunately,Mg and its alloys have low ***,the plastic behaviour of Mg and its alloys ranks among the most complex and difficult to reconcile in metallic material *** basically,the HCP crystal structure coupled with low stacking fault energies(SFE)are largely linked to the poor ductility exhibited by Mg *** innate material characteristics have regrettably limited wide spread applicability of Mg and its *** research efforts aimed at exploring processing strategies to make these alloys more amenable for high formability–mediated engineering use have been reported and still *** paper reviews the structural metallurgy of Mg alloys and its influence on mechanical behaviour,specifically,plasticity *** also concisely presents various processing routes(Alloying,Traditional Forming and Severe Plastic Deformation(SPD))which have been explored to enhance plastic deformability in Mg and its *** refinement and homogenising of phases,reducing CRSS between slip modes,twinning suppression to activate non-basal slip,and weakening and randomisation of the basal texture were observed as the formability enhancing strategies explored in the reviewed *** identifying the limitations of these strategies,further areas to be explored for enhancing plasticity of Mg alloys are highlighted.