Zr-4合金疖状腐蚀与晶粒取向的关系  

RELATIONSHIP BETWEEN NODULAR CORROSION AND GRAIN ORIENTATION OF ZIRCALOY-4

作　　者：王蒙[1] 李强[1] 黄昌军[1] 梁雪[1] 彭剑超[1] 杨艳萍[1] 

机构地区：[1]上海大学材料科学与工程学院,上海200072

出　　处：《上海金属》2012年第5期11-15,共5页Shanghai Metals

基　　金：国家自然科学基金项目(50871064)

摘　　要：将Zr-4合金经过800℃/20 h热处理,用高压釜在500℃、10.3 MPa过热蒸汽中进行腐蚀实验,并采用电子背散射衍射分析(EBSD)技术研究Zr-4合金疖状腐蚀与合金基体表面晶粒取向的关系。结果表明:Zr-4合金经腐蚀后,以(-1 8 7 12)晶面为中心,面夹角在10°范围内的合金基体晶面上生长的氧化膜会发生疖状腐蚀,而在以(0001)晶面为中心,面夹角在17°范围内的晶面上生长的氧化膜不会发生疖状腐蚀。The relationship between nodular corrosion and grain orientation of Zircaloy-4 alloy corroded at 500 ℃ and 10.3 MPa in superheated steam were investigated with EBSD after heat treatment at 800 ℃/20 h. The oxide film formed on some special planes of Zircaloy-4 after corrosion test developed into nodular corrosion, the special planes were distributed within 10° around（-1 8 7 12） plane, while the oxide film formed on the other special plans which distributed within 17° around the （0001） plane did not evolve into nodular corrosion.

关 键 词：ZR-4合金 疖状腐蚀 EBSD 晶粒取向 

分 类 号：TG146.414[一般工业技术—材料科学与工程]