430不锈钢冷轧板高温退火过程中再结晶织构的定量分析  

Quantitative analysis of the recrystallized textures of cold-rolled 430 stainless steel during high-temperature annealing

作　　者：王乃帅[1] 张雄[1] 温治[2] 豆瑞锋[1] 李志强[1] 

机构地区：[1]北京科技大学机械工程学院,北京100083 [2]北京科技大学冶金工业节能减排北京市重点实验室,北京100083

出　　处：《北京科技大学学报》2014年第5期633-638,共6页Journal of University of Science and Technology Beijing

基　　金：中央高校基本科研业务费专项资金资助项目(FRF-AS-10-005B)

摘　　要：在750、800、825和850℃温度下,利用Gleeble1500热模拟试验机对430不锈钢冷轧薄板的等温退火过程进行了详细的实验研究,分析了退火过程中再结晶织构和组织的变化规律,并对关键织构体积分数的演变进行了定量分析.结果发现:随着退火过程的进行,α取向线上的织构强度逐渐减弱,而γ取向线上的织构强度则略有加强,并保持在较高的值;再结晶过程中,{111}和{112}<110>织构的体积分数逐渐降低,而{100}和随机取向晶粒的体积分数逐渐增加.定量分析表明,退火温度越低,完全再结晶后材料内部关键织构的体积分数越偏离冷轧态.最后,针对{111}、{112}?110>、{100}和随机取向织构的体积分数在再结晶过程中的演变规律,建立了JMAK型再结晶织构演变动力学模型.ABSTRACT Variations in the recrystallized texture and microstructure of cold-rolled 430 stainless steel during isothermal annealing were investigated on a Gleeble-1500 thermal-mechanic simulator at 750, 800, 825 and 850℃, and the evolution of main textures was analyzed quantitatively. As annealing proceeds, the intensity of α-fiber orientation components decreases, but the intensity of γ-fiber components increases slightly and maintains at a higher value. The volume fraction of{111} and{112}＆lt;110＆gt; decreases as recrystal-lization proceeds, while the volume fraction of{100} and random orientation textures increases. Compared with the cold-rolled state, it is observed that the volume fraction of main textures has greater changes in annealing at low temperature than at high temperature. Finally, variations in the volume fraction of{111},{112}＆lt;110＆gt; ,{100} and random orientation textures during recrystallization were described by a JMAK kinetics model.

关 键 词：不锈钢 等温退火 再结晶 织构 

分 类 号：TG142.71[一般工业技术—材料科学与工程]