Diffraction Studies of Quenched and Partitioned (Q&P) Steel Multiphase Microstructures Relevant to AHSS Automotive Applications
Novel advanced steels developed in recent years include many with complex multiphase microstructures.Foremost amongst these are steels which contain untransformed parent austenite phase: an example is Quenched and Partitioned steel,commonly referred to as Q&P steel.The austenite is chemically stabilised by carbon partitioning from martensite following a quench interrupted before the martensite finish temperature,Mf.The behaviour of the austenite during subsequent processing,e.g.in potential Third Generation advanced high strength (AHS) automotive steels,provides unique and/or potentially improved property combinations.In the case of automotive steels this might be formability at higher strength levels.It is thus evident that,as well as the progress of microstructural change during the Q&P treatment,the volume of untransformed austenite stabilised during carbon partitioning should be known accurately and the behaviour of this austenite according to its carbon content should be understood.Analysis of XRD and neutron diffraction experiments will be considered in relation to these requirements.
quenching and partitioning (Q&P) martensite retained austenite X-ray diffraction neutron diffraction
EDMONDS David BIGG Timothy
University of Leeds, School of Chemical and Process Engineering, Leeds, LS2 9JT, UK
国际会议
成都
英文
371-374
2016-11-16（万方平台首次上网日期，不代表论文的发表时间）