铸造技术2017，Vol.38Issue(4)：809-811,3.DOI:10.16410/j.issn1000-8365.2017.04.017
2Cr13马氏体耐热钢长期服役过程中组织及性能变化
Microstructure and Mechanical Properties of 2Cr13 Martensitic Heat-resistant Steel in Long Service Process
井晓娟 1周元2
作者信息
- 1. 延安职业技术学院,陕西延安716000
- 2. 锐铝铸造公司,陕西延安716000
- 折叠
摘要
Abstract
The 2Cr13 heat-resistant steel used for thermal power plant steam pipe was studied,its room and high temperature mechanical properties and microstructure changes after serving 230 000 h at 550 ℃ were analyzed.The experimental results show that the impact performance of 2Cr13 heat-resistant steel at high temperature environment significantly decreased after serving for a long time,the impact toughness is reduced to 1/4 of original material,the tensile properties and hardness declining is not obvious,the martensite structure obviously coarsens and tragmentation occur.XRD test was carried out on the electrolytic extraction phase,the results show that the main carbide M23C6 still exist,but carbide particle coarsens,and metastable M6C,M2C and MX significantly reduce or even disappear.关键词
2Cr13耐热钢/显微组织/冲击韧度Key words
2CR13 heat-resistant steel/microstructure/impact toughness分类
矿业与冶金引用本文复制引用
井晓娟,周元..2Cr13马氏体耐热钢长期服役过程中组织及性能变化[J].铸造技术,2017,38(4):809-811,3.
