γ纤维织构份额对430铁素体不锈钢表面起皱的影响  

Effect of γ fiber texture fraction on surface ridging of 430 ferritic stainless steel

作　　者：张志磊[1] 陈纪昌[1] 黄宏川 王均安[1,2] 

机构地区：[1]上海大学材料科学与工程学院材料研究所,上海200072 [2]上海大学-兴化特种不锈钢产业研究院,江苏兴化225721

出　　处：《金属热处理》2016年第11期1-6,共6页Heat Treatment of Metals

基　　金：国家自然科学基金(51171103)

摘　　要：通过工艺控制得到含不同γ纤维织构份额的430铁素体不锈钢样品,研究了γ纤维织构份额对430不锈钢表面起皱程度的影响。结果表明:将冷轧430铁素体不锈钢在略低于再结晶温度下长时间保温,然后进行高温再结晶退火处理能够获得高份额的γ纤维织构;随着显微组织中γ纤维织构份额的提高,430铁素体不锈钢表面抗起皱性能增强。相比于{100}<011>和{112}<110>取向晶粒,γ纤维取向晶粒平均塑性应变比高,并能在再结晶组织中较少形成取向相近的晶粒簇,减轻了铁素体不锈钢的表面起皱现象。Samples with different percentages of γ fiber texture were produced by controlling the cold rolling and annealing process. Effect ofγ fiber texture on surface ridging of the 430 ferritic stainless steel was studied. The results indicate that high percentage of γ fiber texture in the 430 ferritic stainless steel can be obtained through a long time heating at a temperature slightly lower than the recrystallization temperature and then annealing at 850 ℃. With the increase of γ fiber texture percentage,the 430 ferritic stainless steel becomes more resistant to the surface ridging. Compared to the { 100} 〈011〉 and { 112} 〈110〉 oriented grains,the γ fiber grains are of low average plastic strain ratio and easily coordinate with the matrix deformation,and rarely form grain clusters of similar orientations in the recrystallized microstructure,thus reducing surface ridging defects of ferritic stainless steel.

关 键 词：430铁素体不锈钢 热处理 拉伸变形 γ纤维织构 表面起皱 

分 类 号：TG142.23[一般工业技术—材料科学与工程]