吴其浩,熊杰,朱娜琼,何燕霖,李麟

• 1:上海大学材料科学与工程学院

摘要(Abstract)：

采用室温拉伸实验并结合SEM、TEM、XRD以及X射线应力仪原位测定技术,研究不同TRIP处理条件下的高强度TRIP钢的力学性能与显微组织。结果表明,当两相区处理为800℃×3 min,贝氏体区处理为400℃×5 min时,试验钢的抗拉强度可达975.68 MPa,伸长率为27.88%,强塑积可达27202 MPa%;在外加应力作用下,TRIP钢中残留奥氏体在屈服点之后发生向马氏体的转变,残留奥氏体向马氏体的转变为应变诱发相变;同时,残留奥氏体随应变增大而降低的趋势减缓,其强塑性越好,残留奥氏体发生向马氏体的渐进式转变使其TRIP效应更为显著;此外,试验钢中残留奥氏体多呈薄膜状,具有较好的强塑性。

关键词(KeyWords)： 相变诱发塑性(TRIP)钢;原位测量;残留奥氏体;贝氏体区等温;渐进式转变

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目(50971137,50934011)

作者(Author): 吴其浩,熊杰,朱娜琼,何燕霖,李麟

DOI: 10.13289/j.issn.1009-6264.2013.11.017

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