摘要
研究了高铬马氏体耐热钢(0.09C-10.2Cr-0.52Ni-1.52Mo-0.22V-0.07Nb-3.0Co-0.01Ti-0.0129N-0.0033B)的显微组织和力学性能。结果表明:该钢经1100℃×1h空冷正火处理+750℃×1h空冷回火处理后的显微组织为板条状马氏体,在原奥氏体晶界和板条间分布有M23C6碳化物,并有少量1～3μm的M3B2颗粒,马氏体板条内部有10～30nm的MX型析出相。短期蠕变试验数据显示其在650℃的蠕变性能优于P92钢。
The microstructure and mechanical properties of high chromium martensitic heat resistant steel （0,09C- 10,2Cr-0.52Ni-1.52Mo-0.22V-0,07Nb-3.0Co-0.01Ti-0.0129N-0.0033B）were studied, The results show that the microstructure of the steel is lath martensite after normalizing at 1100℃ for lh and tempering at 750℃ for lb. M23C6 carbide distributes along pre-austenite grain boundaries and lath boundaries. M3B2 boride with a size of 1-3 μm is also found in the microstructure. MX type precipitates with a size of 10-30 nm present within martensitic lath. Short-term creep data reveal that the creep property at 650℃ ofthe tested steel is superior to that of the conventional ferritic/martensitic P92 steel.
出处
《热加工工艺》
CSCD
北大核心
2007年第22期8-10,共3页
Hot Working Technology
基金
山东理工大学科研基金资助项目(2005KJM03)
关键词
高铬马氏体耐热钢
蠕变
纳米析出相
断裂
钛
high chromium martensitic heat-resistant steel
creep
nano-sized precipitate
fracture
titanium
