时效处理SUS316L不锈钢中析出相的晶体结构和化学成分Crystal structure and chemical composition of precipitates in an aged SUS316L stainless steel
刘小萍,田文怀,杨峰,郭朝丽,高原
摘要(Abstract)：
研究了经1100℃固溶化处理和550℃,600℃及650℃,10000h时效处理后SUS316L不锈钢中的微观组织。利用透射电子显微镜对析出相的形状,大小,分布特征进行了观察。利用电子衍射技术对析出相的晶体结构进行了分析。利用分析电子显微镜能谱分析仪对析出相的化学成分进行了分析。结果表明:固溶后的SUS316L不锈钢经不同温度时效都有M23C6型碳化物的析出相存在。能谱分析显示M23C6析出相主要是由金属铬组成的碳化物。大部分M23C6碳化物分布在基体的晶界上,也有部分M23C6碳化物分布在基体的晶粒内部和晶体缺陷处。M23C6碳化物的大小和数量随着时效温度的升高而增加。
关键词(KeyWords)： SUS316L不锈钢;M23C6沉淀;时效;透射电镜;晶间腐蚀
基金项目(Foundation): 国家自然科学基金;; 上海宝钢集团公司联合资助项目(50374050)
作者(Author): 刘小萍,田文怀,杨峰,郭朝丽,高原
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