V元素对Cr5型热作模具钢回火碳化物的影响

doi:10.13251/j.issn.0254-6051.2024.10.036

金属热处理 ›› 2024, Vol. 49 ›› Issue (10): 220-225.DOI: 10.13251/j.issn.0254-6051.2024.10.036

V元素对Cr5型热作模具钢回火碳化物的影响

邵兴洲¹, 左鹏鹏^1,2,3, 季灯平¹, 冯培忠³

1.浙江青山钢铁有限公司, 浙江丽水 323903;
2.江苏科技大学材料科学与工程学院, 江苏镇江 212003;
3.中国矿业大学材料与物理学院, 江苏徐州 221116

收稿日期:2024-04-29 修回日期:2024-08-08 出版日期:2024-11-28 发布日期:2024-11-28
通讯作者: 左鹏鹏,讲师,硕士生导师,博士,E-mail: zpp0513@163.com
作者简介:邵兴洲(1987—),男,工程师,硕士,主要研究方向为热作模具钢组织与性能,E-mail: sxzsw111@126.com。

Effect of V on tempered carbides of Cr5-type hot work die steel

Shao Xingzhou¹, Zuo Pengpeng^1,2,3, Ji Dengping¹, Feng Peizhong³

1. Zhejiang Qingshan Iron and Steel Co., Ltd., Lishui Zhejiang 323903, China;
2. School of Materials Science and Engineering, Jiangsu University of Science and Technology, Zhenjiang Jiangsu 212003, China;
3. School of Materials Science and Physics, University of Mining and Technology, Xuzhou Jiangsu 221116, China

Received:2024-04-29 Revised:2024-08-08 Online:2024-11-28 Published:2024-11-28

摘要/Abstract

摘要： 采用扫描电镜(SEM)和透射电镜(TEM)研究了V元素对Cr5型热作模具钢回火硬度、显微组织及碳化物的影响。结果表明,V含量高,钢的淬硬性下降,抗回火软化性能增强,对二次硬化峰没有显著影响,同时促进了尺寸为50~100 nm的M₇C₃型碳化物形成。此外,V含量高可使奥氏体化过程中未完全溶入基体的大尺寸MC型富V碳化物保留至回火态。

关键词: Cr5型热作模具钢, V元素, 回火, 碳化物

Abstract: Effect of V content on tempering hardness, microstructure and carbides of Cr5-type hot work die steel was studied by scanning electron microscope (SEM) and transmission electron microscope (TEM). The results show that high V content reduces the quenching hardness of the steel, enhances its resistance to tempering softening and has no significant effect on the secondary hardening peak. At the same time, it promotes the formation of M₇C₃ type carbides with a size of 50-100 nm. In addition, high V content can make those large-sized MC type V-rich carbides not completely dissolved into the matrix during austenitizing retain to the tempered state.

Key words: Cr5-type hot work die steel, V element, tempering, carbides

中图分类号:

TG142

邵兴洲, 左鹏鹏, 季灯平, 冯培忠. V元素对Cr5型热作模具钢回火碳化物的影响[J]. 金属热处理, 2024, 49(10): 220-225.

Shao Xingzhou, Zuo Pengpeng, Ji Dengping, Feng Peizhong. Effect of V on tempered carbides of Cr5-type hot work die steel[J]. Heat Treatment of Metals, 2024, 49(10): 220-225.

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V元素对Cr5型热作模具钢回火碳化物的影响

Effect of V on tempered carbides of Cr5-type hot work die steel

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