Temperature Depending Influence of the Martensite Formation on the Mechanical Properties of High‐Alloyed Cr‐Mn‐Ni As‐Cast Steels
Temperature Depending Influence of the Martensite Formation on the Mechanical Properties of High‐Alloyed Cr‐Mn‐Ni As‐Cast Steels
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DOI：
10.1002/srin.201000228
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发表时间：
2011
影响因子：
2.2
通讯作者：
A. Jahn;A. Kovalev;A. Weiss;S. Wolf;L. Krüger;P. Scheller
中科院分区：
文献类型：
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作者：
A. Jahn;A. Kovalev;A. Weiss;S. Wolf;L. Krüger;P. Scheller
研究了三种不同镍含量的高合金化铬锰镍铸钢马氏体形成的温度依赖性和力学性能。结果表明，随着镍含量的增加，钢的Ms和Md温度降低。因此，应变诱发马氏体的形成、TRIP效应和伸长率的温度反常在较低温度下发生。镍含量为3%的合金钢表现为应力诱发马氏体形成和动态应变时效。根据镍含量和温度的不同，在所研究的钢中，除TRIP效应外，还会出现TWIP效应。这项研究是通过静态拉伸测试、膨胀测试、光学显微镜和磁秤来检测铁磁相分数来进行的。
The temperature dependence of the martensite formation and the mechanical properties of three high alloyed Cr‐Mn‐Ni as‐cast steels with varying Ni contents were studied. The results showed that the Ms and Md temperatures of the steels decrease with increasing nickel contents. Therefore the strain‐induced martensite formation, the TRIP effect and the temperature anomaly of the elongations occurs at lower temperatures. The steel alloyed with 3% nickel shows a stress induced formation of martensite and a dynamic strain aging. Depending on the nickel content and the temperature a TWIP effect occurs additionally to the TRIP effect in the investigated steels. The study was performed by using static tensile tests, dilatometer tests, optical microscopy and the magnetic scale for the detection of ferromagnetic phase fractions.