GRAIN BOUNDARY SEGREGATION AND INTERGRANULAR BRITTLENESS IN HIGH STRENGTH ALUMINIUM ALLOY

来源期刊：中国有色金属学报(英文版)1995年第3期

论文作者：Song, Renguo Zheng, Meiguang

文章页码：97 - 100

Key words：high strength aluminium alloy; grain boundary segregation; intergranular brittleness

Abstract: Effects of magnesium and hydrogen to grain boundary on the fracture energy in 7050high strength aluminium alloy have been calculated using the quasichemical approach. The results indicated that both Mg and H segregation induce the intergranular fracture energy decrease, thus resulting in grain boundary embrittlement, and the embrittlement degree induced by hydrogen is larger than that of magnesium. This conclusion corresponds with the experimental results.