工程科学学报2016，Vol.38Issue(9)：1264-1269,6.DOI:10.13374/j.issn2095-9389.2016.09.010
高碳马氏体不锈钢8 Cr13 MoV钢铸态组织及碳化物
Microstructure and carbides of as-cast high carbon martensitic stainless steel 8 Cr13 MoV
于文涛 1李晶 1史成斌 1朱勤天 1宋惠东 1石昌民1
作者信息
- 1. 北京科技大学钢铁冶金新技术国家重点实验室，北京100083
- 折叠
摘要
Abstract
The solidification process of 8Cr13MoV martensitic stainless steel was calculated by using Thermo-Calc software. The solidification microstructure, morphology and type of carbides were analyzed by optical microscopy, scanning electron microscopy and X-ray diffraction. The static continuous cooling transformation curve was measured by Gleeble thermal simulator. The results indicate that the microstructure of 8Cr13MoV includes ferrite and M23 C6 under the equalized solidification condition, while ferrite, martensite, retained austenite, M7 C3 and M23 C6 in the practical solidification condition. The main carbides are M7 C3 , and a small number of M23 C6 with lamellar or dendritic morphology distribute on the grain boundaries, which can be attributed to element segregation. Because of high C and Cr contents, austenite can transform to martensite at a cooling rate of 0. 1℃·s-1 .关键词
马氏体不锈钢/显微组织/碳化物/凝固Key words
martensitic stainless steel/microstructure/carbides/solidification分类
矿业与冶金引用本文复制引用
于文涛,李晶,史成斌,朱勤天,宋惠东,石昌民..高碳马氏体不锈钢8 Cr13 MoV钢铸态组织及碳化物[J].工程科学学报,2016,38(9):1264-1269,6.
