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中文摘要：
采用末端淬火实验、剥落腐蚀实验结合扫描和透射电镜分析，研究了7085铝合金剥落腐蚀的淬火敏感性。结果表明：7085铝合金的耐剥落腐蚀性能随淬火速率的降低而下降，腐蚀等级由EA级变为EB级，最大腐蚀深度从135μm增加至315μm，腐蚀深度与淬火速率的对数呈线性关系。淬火速率降低导致晶界析出相尺寸增加、无沉淀析出带宽化和在亚晶处也有η相析出，是造成剥落腐蚀淬火敏感性的主要原因。
英文摘要：
Quench sensitivity relative to exfoliation corrosion of 7085 aluminum alloy plate was inves- tigated by means of end-quench test, corrosion immersion test, scanning electron microscopy（SEM）, transmission electron microscopy （TEM）. The results show that the resistance to exfoliation corrosion of 7085 aluminum alloy plate decreased with quench rate decreasing, from EA to EB and the maximum corrosion depth from 135 pm increasing to 315 μm, there is a liner relation between the corrosion depth and the logarithm of quench rate. With decrease of quench rate, the size of η equilibrium phase at grain boundaries increased, wider precipitate free zone near grain boundaries and some equilibrium rl phase precipitate at sub-grain are primarily responsible for quench sensitivity relative to exfoliation corrosion.
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