Design of low hardness abrasion resistant steels
Design of low hardness abrasion resistant steels
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DOI：
10.1016/j.wear.2013.01.002
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发表时间：
2013-04
期刊：
影响因子：
5
通讯作者：
Xiaojun Xu;W. Xu;Fre Hipgrave Ederveen;S. Zwaag
中科院分区：
文献类型：
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作者：
Xiaojun Xu;W. Xu;Fre Hipgrave Ederveen;S. Zwaag
耐磨钢结合良好的可成形性以及强度和延展性的理想平衡在工业应用中具有很高的需求。目前高端耐磨钢的发展主要是基于高硬度马氏体概念，其假设是耐磨性与硬度保持单调关系。然而，各种实验观察表明，与具有相对较低硬度但具有更好延展性/韧性的多相钢相比，马氏体的高硬度不能保证高耐磨性，并且马氏体的脆性性质通常导致不期望的可加工性和其他较差的使用性能。本文综述了各种显微组织方面对耐磨性的影响，并试图为低硬度耐磨钢定义一种理想的显微组织：通过TRIP效应由残余奥氏体强化的双相基体。给定所需微观结构的详细描述，其特征可以转换为可量化的标准，并在计算遗传合金设计方法中实施，为新的韧性耐磨钢系列设计合金成分和热处理。
Abrasion resistant steels in combination with a good formability and a desirable balance of strength and ductility are in high demand for industrial applications. Current developments of high end abrasion resistant steels are mostly oriented on the high hardness martensitic concept following the hypothesis that the abrasion resistance holds a monotonous relationship with hardness. However, various experimental observations have suggested that the high hardness of martensite does not guarantee a high abrasion resistance comparing to multiple phase steels with a relative lower hardness but better ductility/toughness, and the brittle nature of martensite often leads to undesirable machinability and other inferior in-use properties. The present paper reviews the effects of various microstructural aspects on the abrasion resistance and attempts to define a desirable microstructure for low hardness abrasion resistant steels: a dual phase matrix strengthened by retained austenite via the TRIP effect. Given a detailed description of the desirable microstructure, its characteristics can be converted to quantifiable criteria and be implemented in a computational genetic alloy design approach to design alloy compositions and heat treatments for new families of ductile yet abrasion resistant steels.