摘要
通过研究时效热处理对2205双相不锈钢耐点蚀性能的影响,发现590℃和650℃的时效处理降低了材料的耐点蚀性能,并且耐点蚀性能随着时效温度和时效时间的增加而降低;点蚀蚀孔倾向于在铁素体和奥氏体的相界处以及铁素体中的析出相附近形核长大。此外,通过TEM物相分析发现590℃时效析出相有R相,650℃时效析出相有R相和σ相。
The effect of aging treatment on the pitting corrosion resistance of 2205 duplex stainless steel was studied.The pitting resistance of samples was reduced by aging treatment both at 590 ℃ and 650 ℃.The pits tended to nucleate and grow near the precipitations in the ferrite and α/γ phase boundary.In addition,through TEM phase analysis,the precipitations were found to be R phase in the 590 ℃ aging process while R phase and σ phase in the 650 ℃ aging.
出处
《上海金属》
CAS
2011年第4期33-38,共6页
Shanghai Metals
基金
国家973项目子课题(NO.2007CB613900)
上海市科学技术发展基金(08DZ2201300)
上海市纳米专项(0752nm004)资助项目
关键词
2205
双相不锈钢
时效处理
点蚀
析出相
2205 Duplex Stainless Steel
Aging Treatment
Pitting
Precipitation Phase
