Influence mechanism of Y addition on microstructure, adsorbability, mechanical properties of as-cast high speed steel
Influence mechanism of Y addition on microstructure, adsorbability, mechanical properties of as-cast high speed steel
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DOI：
10.1016/j.msea.2022.144520
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发表时间：
2023-01
期刊：
影响因子：
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通讯作者：
Pengyu Chen;Yangzhen Liu;Xianzhong Ping;W. Li;Yanliang Yi
中科院分区：
文献类型：
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作者：
Pengyu Chen;Yangzhen Liu;Xianzhong Ping;W. Li;Yanliang Yi
为了提高高速钢的力学性能，在铸态高速钢中加入了不同含量的稀土Y(0、0.047、0.096、0.229和0.310 (wt.%))，系统地研究了铸态高速钢的组织和力学性能。结果表明：hss的相主要由α-Fe、MC、M2C和M6C组成（M = Fe、V、Cr等）；Y元素主要分布在基体与碳化物界面处。随着Y含量的增加，碳化物的形貌发生了明显的变化，即碳化物的形状因子kof由0.3154增加到0.4028。随着Y含量从0 wt%增加到0.229 wt%， hss的强度、伸长率和冲击韧性分别从516.7 MPa、0.29%和3.8 J提高到820.9 MPa、0.47%和5.2 J。这为高速钢的设计和应用提供了新的思路，对其他耐磨材料的开发具有实用的参考价值。
To improve the mechanical properties of high speed steels (HSSs), different contents of rare earth Y (0, 0.047, 0.096, 0.229, and 0.310 (wt.%)) are added, and the microstructure and mechanical properties of as-cast HSSs are systematically studied. The results show that the phases of HSSs are mainly composed of α-Fe, MC, M2C, and M6C (M = Fe, V, Cr, etc.). The Y element is primarily distributed at the interface between carbide and matrix. The morphology of carbide changes remarkedly with the increased Y content, i.e. the shape factorKof carbide increases from 0.3154 to 0.4028. Moreover, as the Y content increases from 0 wt% to 0.229 wt%, the strength, elongation and impact toughness of HSSs are improved from 516.7 MPa, 0.29% and 3.8 J to 820.9 MPa, 0.47% and 5.2 J, respectively. This provides a new idea for the design and application of HSSs, and has a practical reference value for the development of other wear-resistant materials.