中国电力2017，Vol.50Issue(5)：156-162,7.DOI:10.11930/j.issn.1004-9649.2017.05.156.07
S30432钢出现马氏体组织时的力学性能试验研究
Experimental Study on Mechanical Properties of S30432 Steel Containing Martensitic Structure
史志刚 1马红 1梅宝 1何晓东 1董红年 2朱蕊花3
作者信息
- 1. 西安热工研究院有限公司,陕西西安 710054
- 2. 厂东大唐国际潮州发电公司,广东潮州 515723
- 3. 西安交通大学,陕西西安710049
- 折叠
摘要
Abstract
In order to evaluate the long-term service security of S30432 steel containing martensitic structure,the mechanical properties and fracture mechanism of S30432 steel are studied by using XRD,SEM,TEM,tensile testing machine,impact testing machine and Vickers hardness testing machine.The study results show that luring the 19 000-hour service time,the martensite structure of S30432 steel has induced or exacerbated further increase of room-temperature tensile strength and hardness besides the precipitated phase enhancement as well as the room-temperature aging embrittlement.Affected by the martensite structure,the tensile impact fracture of S30432 steel at room-temperature is formed along the grain boundary regions close to the martensitic structure rather than along the grain boundary precipitated phase of the intergranular fracture toughness,while at high temperature,the fracture exhibits transgranular dimple fracture.关键词
S30432/α'-马氏体/抗拉强度/冲击吸收能量/断裂模式Key words
S30432/α'-martensite/tensile strength/impact absorbed energy/fracture mechanism分类
矿业与冶金引用本文复制引用
史志刚,马红,梅宝,何晓东,董红年,朱蕊花..S30432钢出现马氏体组织时的力学性能试验研究[J].中国电力,2017,50(5):156-162,7.
