中南大学学报（自然科学版）2017，Vol.48Issue(7)：1726-1733,8.DOI:10.11817/j.issn.1672-7207.2017.07.006
断续时效对Al-Cu-Mg-Ag新型耐热铝合金抗腐蚀性能的影响
Effects of interrupted aging on corrosion resistance of Al-Cu-Mg-Ag new heat-resistant Al alloy
摘要
Abstract
The effects of the interrupted aging on the microstructure and the corrosion resistance of Al-Cu-Mg-Ag heat-resistant aluminium alloy were researched by intergranular corrosion (IGC),exfoliation corrosion (EXCO),electrochemical analyses and transmission electron microcopy analyses.The results show the precipitations both in the grains and on the grain boundaries are refined by interrupted aging.The coarse precipitations are distributed discontinuously on the grain boundaries of the single aged sample whose precipitation free zone (PFZ) is widened with some discontinuous precipitations.The fine precipitations are chain-like distributed on the grain boundaries of the interrupted aging sample and its PFZ is divided into two parts and correspondingly,the corrosion passageway is decreased tor the interrupted aging sample.The corrosion resistance of Al-Cu-Mg-Ag alloy is enhanced by the interrupted aging.关键词
Al-Cu-Mg-Ag合金/断续时效/晶间腐蚀/剥落腐蚀/无沉淀析出带(PFZ)Key words
Al-Cu-Mg-Ag/interrupted aging/intergranular corrosion/exfoliation corrosion/precipitation free zone (PFZ)分类
矿业与冶金引用本文复制引用
王志发,刘晓艳,张瑞杰,张喜亮,崔好选,高飞..断续时效对Al-Cu-Mg-Ag新型耐热铝合金抗腐蚀性能的影响[J].中南大学学报（自然科学版）,2017,48(7):1726-1733,8.基金项目
河北省自然科学基金资助项目(E2013402056) （E2013402056）
国家自然科学基金资助项目(51601053) （51601053）
河北省高等学校科学技术研究项目(QN2014002) (Project(E2013402056) supported by the Natural Science Foundation of Hebei Province （QN2014002）
Project(51601053) supported by the National Natural Science Foundation of China （51601053）
Project(QN2014002) supported by the Science and Technology Research Foundation of Hebei Education Department for Young Teachers in University) （QN2014002）
