Investigations of a nanostructured FeMnSi shape memory alloy produced via severe plastic deformation

作     者：Gheorghe Gurau Carmela Gurau Vedamanickam Sampath Leandru Gheorghe Bujoreanu 

作者机构：Faculty of Engineering"Dun?rea de Jos" University of Galati Department of Metallurgical and Materials EngineeringIndian Institute of Technology Madras Faculty of Materials Science and Engineering"Gheorghe Asachi" Technical University of Ia?i 

出 版 物：《International Journal of Minerals,Metallurgy and Materials》 (矿物冶金与材料学报（英文版）)

年 卷 期：2016年第23卷第11期

页      面：1315-1322页

核心收录：

学科分类：0709[理学-地质学] 0819[工学-矿业工程] 07[理学] 08[工学] 070205[理学-凝聚态物理] 0806[工学-冶金工程] 0708[理学-地球物理学] 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] 0802[工学-机械工程] 0702[理学-物理学] 0801[工学-力学（可授工学、理学学位）] 

基　　金：supported by Project PN.IIPT-PCCA-2011-3.1-0174 Contract 144/2012 

主　　题：iorn manganese silicon alloys shape memory effect nanostructured materials martensite plastic deformation 

摘      要：Low-cost iron-based shape memory alloys（SMAs） show great potential for engineering applications. The developments of new processing techniques have recently enabled the production of nanocrystalline materials with improved properties. These developments have opened avenues for newer applications for SMAs. The influence of severe plastic deformation induced by the high-speed high-pressure torsion（HSHPT） process on the microstructural evolution of an Fe–Mn–Si–Cr alloy was investigated. Transmission electron microscopic analysis of the alloy revealed the existence of nanoscale grains with an abundance of stacking faults. The high density of dislocations characteristic of severe plastic deformation was not observed in this alloy. X-ray diffraction studies revealed the presence of ε-martensite with an HCP crystal structure and γ-phase with an FCC structure.