7085合金淬火过程中剥落腐蚀敏感性的研究  

Research on Exfoliation Corrosion Sensitivity of 7085 Alloy During Quenching Process

作　　者：高亚平[1,2] 窦新顺[1,2] 张静[1,2] 刘万里[3] 

机构地区：[1]河北科技大学信息科学与工程学院,河北石家庄050018 [2]河北女子职业技术学院,河北石家庄050091 [3]河北科技大学

出　　处：《铸造技术》2014年第11期2535-2537,共3页Foundry Technology

基　　金：河北省高等学校科学技术研究项目(Z2013098)

摘　　要：以7085铝合金为研究对象,通过淬火及浸泡试验研究其剥落腐蚀的敏感性,分析了淬火速率对该合金显微组织的影响。结果表明,7085铝合金的剥落腐蚀受到结晶程度、晶粒尺寸及析出相等因素的共同作用;随着淬火速率的减小,合金材料的耐剥落腐蚀性能逐渐降低,腐蚀等级从EA级降为EB级,且晶界η相的尺寸和无沉淀析出带的宽度增加,加剧了合金的淬火敏感性。Using 7085 alloy as research object, thro ugh quenching and immersion experiments, the exfoliation and exfoliation corrosion sensitivity were studied to understand the influence of quenching rate on the microstructure of alloys.The results shows that the material exfoliation corrosion properties is dependent on the degree of crystallinity of the alloy,the grain size and the precipitations size; reducing the quenching rate, the exfoliation corrosion resistance decreases with the corrosion level changed from EA to EB. Meanwhile, the size of η phase at the grain boundary and the growth of non precipitation band width can enhance the alloy quenching sensitivity.

关 键 词：计算机分析 淬火 剥落腐蚀 

分 类 号：TG166.3[金属学及工艺—热处理]