首页 | 本学科首页   官方微博 | 高级检索  
     检索      


In-situ strain localization analysis in low density transformation-twinning induced plasticity steel using digital image correlation
Institution:1. Advanced Materials for Clean Energy, Department of Mechanical Engineering, University of Saskatchewan, Canada;2. Hot Deformation & Thermo-mechanical Processing of High Performance Engineering Materials Lab, School of Metallurgy and Materials Engineering, College of Engineering, University of Tehran, Tehran, Iran;3. Intelligence Based Experimental Mechanics Lab, Mechanical Engineering Department, University of Tehran, Tehran, Iran;1. Vision and Intelligent System Research Lab, Faculty of Electrical & Electronic Engineering, Universiti Malaysia Pahang, 26600 Pekan, Pahang, Malaysia;2. Sustainable Power, Electrical and Renewable Energy Research Group, Faculty of Electrical & Electronic Engineering, Universiti Malaysia Pahang, 26600 Pekan, Pahang, Malaysia;1. Theoretical Division, MS-B262, Los Alamos National Laboratory, Los Alamos, NM 87545, USA;2. Department of Materials Science and Engineering, KTH Royal Institute of Technology, Brinellvägen 23, 10044 Stockholm, Sweden;1. Materials Science and Technology Division, Los Alamos National Laboratory, Los Alamos, NM 87545, USA;2. School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA;3. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA;1. Department of Materials Engineering, Isfahan University of Technology, 84156-83111 Isfahan, Iran;2. Fould Institute of Technology, Fouldshare 84916-63763, Iran;1. School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 10081, China;2. State Key Laboratory for Advanced Metals and Materials (SKLAMM) and the Collaborative Innovation Center of Steel Technology (CICST), University of Science and Technology Beijing, Beijing 10081, China;3. Advanced Photon Source, Argonne National Laboratory, Argonne, IL 60439, USA;4. Department of Materials Science and Engineering, The University of Tennessee, Knoxville, TN 37996-2200, USA;5. Institute of Nuclear Physics and Chemistry, Mianyang, Mianyang 621900, China
Abstract:The effect of deformation temperature on the strain localization has been evaluated by an adapted digital image correlation (DIC) technique during tensile deformation. The progress of strain localization was traced by the corresponding strain maps. The electron backscatter diffraction analysis and tint etching technique were utilized to determine the impact of martensitic transformation and deformation twinning on the strain localization in both elastic and plastic regimes. In elastic regime the narrow strain bands which are aligned perpendicular to the tension direction were observed in temperature range of 25 to 180 °C due to the stress-assisted epsilon martensite. The strain bands were disappeared by increasing the temperature to 300 °C and reappeared at 400 °C due to the stress-assisted deformation twinning. In plastic regime strain localization continued at 25 °C and 180 °C due to the strain-induced alfa-martensite and deformation twinning, respectively. The intensity of plastic strain localization was increased by increasing the strain due to the enhancement of martensite and twin volume fraction. The plastic strain showed more homogeneity at 300 °C due to the lack of both strain-induced martensite and deformation twinning.
Keywords:In situ  Phase transformation  Deformation twinning  Austenitic steel
本文献已被 ScienceDirect 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号