Influence of Deformation Induced Martensite Formation on the Mechanical Properties of Metastable Austenite (B05)

形变诱发马氏体形成对亚稳奥氏体力学性能的影响 (B05)

• 批准号: 197048648
• 金额: --
• 依托单位: Lehrstuhl für Werkstoffkunde (WKK)
• 依托单位国家: 德国
• 项目类别: Collaborative Research Centres
• 财政年份: 2011
• 资助国家: 德国
• 起止时间: 2010-12-31 至 2022-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/197048648?language=en
• 关键词: Influence; Deformation; Induced; Martensite; Formation

The goal of this project is the improvement of the fatigue properties from the LCF to the VHCF regime of metastable austenitic Cr-Ni-steels due to deformation induced martensite formation as a consequence of defined surface machining processes. Besides surface hardening and residual stress state, microstructural parameters such as volume fraction, thickness, and distribution of the martensite are studied in detail. The microstructural parameters are quantified by light- and electron-microscopy as well as x-ray diffraction methods and their influence on fatigue and wear behaviour will be evaluated by electrical and magnetic in situ measurements.

该项目的目标是改善亚稳奥氏体钢的疲劳性能，从低循环疲劳到真空疲劳循环，这是由于变形诱发马氏体的形成导致的，这是特定的表面加工工艺的结果。除了表面硬化和残余应力状态外，还详细研究了马氏体的体积分数、厚度和分布等显微组织参数。显微组织参数通过光学显微镜、电子显微镜以及X射线衍射法进行了量化，其对疲劳和磨损行为的影响将通过电学和磁学原位测量来评估。