热处理对铁素体不锈钢组织和性能的影响  

Effect of Heat Treatment Process on Microstructure and Properties of Ferrite Stainless Steel

作　　者：温军国[1] 郑弃非[1] 涂思京[1] 赵云豪[1] 李德富[1] 

机构地区：[1]北京有色金属研究总院加工工程研究中心,北京100088

出　　处：《稀有金属》2006年第z2期152-154,共3页Chinese Journal of Rare Metals

摘　　要：研究了不同热处理工艺对铁素体不锈钢的组织与性能的影响。结果表明:铁素体不锈钢固溶处理时,温度在900℃以下组织无明显变化,其硬度随着温度的上升变化缓慢;900℃左右发生再结晶,硬度显著降低;在475℃热处理后析出物增多,硬度增加,耐腐蚀性能严重下降,即有明显475℃脆性现象。Effect of heat treatment process on microstructure and mechanical properties of ferrite stainless steel was studied.The result shows that at the solid-solution temperature lower than 900 ℃,the microstructures of the steel do not change. With the temperature increasing,the hardness of the steel changes slowly.At the solid-solution temperature higher than 900 ℃,the recrystallization grain of the steel increases,the hardness decreases obviously.Aged at 475 ℃ for various time,the precipitates appear,the hardness of the steel increases and the corrosion resistance of the steel declines seriously.Such phenomena mentioned above is the 475 ℃ embrittlement of the steel.

关 键 词：铁素体不锈钢 热处理 475℃脆性 

分 类 号：TG142[一般工业技术—材料科学与工程]