题 目: Effect of stress on localized corrosion and multiple intergranular stress corrosion cracking in aluminum alloy 2024
报告人: Dr. Xiaodong Liu(刘晓东),Sr. Research Engineer
Dept. of Research & Development, Caterpillar Inc.
时 间:2011年6月9日(周四)上午9:30
地 点:南区学术报告厅一楼
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Abstract
High strength aluminum alloys are widely used in aerospace and aircraft industries, but are susceptible to intergranular corrosion (IGC) and stress corrosion cracking (SCC). SCC in aluminum alloys is almost exclusively intergranular. It is of a great interest to quantify the propagation kinetics of intergranular stress corrosion cracking (IGSCC) along the grain boundaries, which depends on tensile, compressive and residual stresses, wrought orientations, composition and microstructure along grain boundaries, precipitates and inclusions at the surrounding of grain boundaries, and interaction between the microstructure and local environment. The objectives of this work are to better understand the effects of applied tensile and compressive stresses and residual stresses on the multiple cracks growth kinetics of IGC in 2024-T3 aluminum alloy using 4 specially designed experimental approaches.