摘要
在纯H_2气氛中,采用金属/H_2共晶定向凝固技术制备得到了不同合金成分和气压条件下的多孔Cu-xCr合金,研究了多孔Cu-xCr合金气孔析出机制。结果表明:气孔在Gasar多孔Cu及单相Cu-Cr合金中的晶内和晶界均能形核,而在Gasar多孔亚共晶及过共晶Cu-xCr合金中,气孔在共晶组织上析出和共晶组织协同定向生长。
Gasar porous Cu-xCr alloys were fabricated by a metal/hydrogen unidirectional solidification method under different hydrogen gas pressure. Precipitation mechanism of the porosity in porous alloy Cu-xCr for Gasar rules was investigated. The results show that Gasar pores can nucleate in grain and on grain boundaries of Cu and single-phase Cu-xCr alloy. But Gasar pores precipitates in the eutectic structure and directionally grows together with eutectic.
出处
《铸造技术》
北大核心
2017年第8期1913-1917,共5页
Foundry Technology
基金
国家自然科学基金资助项目(51164018)
云南省教育厅基金资助项目(2012Y337)
