Very high cycle fatigue behaviors of Mn-Si-Cr series Bainite/Martensite dual phase steels
Very high cycle fatigue behaviors of Mn-Si-Cr series Bainite/Martensite dual phase steels
复制标题
DOI：
10.1016/j.matdes.2010.01.008
复制
发表时间：
2010-06-01
影响因子：
8.4
通讯作者：
Liu, Y. B.
中科院分区：
文献类型：
--
作者：
Yu, Y.;Gu, J. L.;Liu, Y. B.
本研究对锰 - 硅 - 铬系贝氏体/马氏体（B/M）双相高强度低合金钢的超高周疲劳（VHCF）行为进行了研究，以确保其在铁路和油田中的安全应用。通过超声疲劳试验设计并研究了四种化学成分和七种类型的B/M钢。提出了表观和本征超高周疲劳强度的概念。结果表明，在超声疲劳试验中，B/M钢的发热效应不可忽视，材料的本征超高周疲劳强度越高，自热的负面影响越显著。更重要的是，B/M钢的超高周疲劳性能对夹杂物的敏感性低于回火马氏体钢，残余奥氏体量对超高周疲劳性能影响较小。（C）2010爱思唯尔有限公司。保留所有权利。
The present work studied the very high cycle fatigue (VHCF) behaviors of Mn-Si-Cr series Bainite/Martensite (B/M) dual phase high-strength low-alloy (HSLA) steels to ensure safe applications in railway and oil field. Four kinds of chemical compositions and seven types of B/M steels were designed and studied by ultrasonic fatigue test. The conception of apparent and intrinsic VHCF strength is addressed. Results show the effect of heat generation cannot be ignored in B/M steels in ultrasonic fatigue test, and higher is the intrinsic VHCF strength of materials, more remarkable is the negative effect of self-heating. More importantly, the VHCF property of B/M steels is less sensitive to the inclusion than that of tempered martensite steels, and the amount of retained austenite puts little effect on the VHCF property. (C) 2010 Elsevier Ltd. All rights reserved.