On the Micro-scale Damage Behavior of a 0.1C6MnMedium-Mn Steel
The present work concentrates on the investigation of the micro-damage behavior in the case of batch annealed 0.1C6Mn steel as a function of intercritical annealing temperature.By the variation of this most important annealing parameter a number of different microstructures,consisting of altering amounts of ferrite,martensite and retained austenite,could be adjusted.Moreover,martensite and retained austenite did not only change in their amount but also in size and considerably in their composition,which implies a modification of their hardness and for the latter,a varying chemical stability.Therefore,a detailed investigation of non-deformed and pre-strained microstructures was performed by using scanning electron microscopy (SEM) while interrupted tensile testing was carried out to determine the stability of retained austenite.To understand the micro-scale damage response of the investigated steel,tested tensile samples were analyzed with respect to their fracture behavior as well as void appearance and location within the microstructure.It was found that the stability of retained austenite and the presence of hard athermal martensite played the most important role governing the overall damage behavior of this Medium-Mn steel.
TRIP retained austenite stability fracture behavior void formation Medium-Mn steel
STEINEDER Katharina KRIZAN Daniel SCHNEIDER Reinhold BEAL Coline SOMMITSCH Christof
Research & Development, University of Applied Sciences Upper Austria, Wels, Austria Research and Development Department, Business Unit Coil, Voestalpine Steel Division GmbH, Linz, Aust Institute of Materials Science and Welding, Graz University of Technology, Graz, Austria
国际会议
成都
英文
415-419
2016-11-16（万方平台首次上网日期，不代表论文的发表时间）