TiC–High Mn Steel-Bonded Cermets with Improved Strength and Impact Toughness
发布时间：2021-11-22
点击次数：
DOI码：10.1002/srin.202000400
发表刊物：Steel research International
摘要：TiC–high Mn steel-bonded cermets are prepared by powder metallurgy techniques. The effects of (Ti0.5W0.5)C or WC on the microstructure, hardness, transverse rupture strength (TRS), and impact toughness (IM) are investigated. The results show that regardless of the additives used, the hardness and TRS of cermets increase with the increase in W content. However, IM is not directly proportional to the W content. Peak IM value is obtained at 5% WC addition. The highest IM of 15.12 J cm2 is measured from the cermet with (Ti0.5W0.5)C additive with a hardness and TRS of 64.8 HRC and 2510 MPa, respectively. Liquid phase sintering occurs at vacuum sintering. Black core–gray outer rim structure is formed in cermets with WC additives and white inner rims appear in cermets with higher W content. White core–gray rim structure is formed in cermets with (Ti0.5W0.5)C additives. The impact fracture mode of the cermets is the intergranular fracture accompanied by the tearing edges of the binder. The tearing of the high Mn steel binder is the main source of IM. IM peaks are attributed to the contradictory effects of decreased fraction and refined binder microstructure.
合写作者：周浩钧, 卢静, 吴宁
第一作者：李国平
论文类型：应用研究
通讯作者：吕英海, 罗丰华
论文编号：2000400
文献类型：J
卷号：92
页面范围：1-10
是否译文：否
发表时间：2021-01-01
附件：
2021-TiC–High Mn Steel-Bonded Cermets with Improved Strength and Impact Toughness.pdf