摘要
利用GASAR法(固-气共晶定向凝固法)制备了Al-5Cu多孔合金,研究了温度、氢气压力对孔隙率的影响。温度与饱和氢气压力的提高可以提高氢气在液态Al-5Cu合金中的溶解度,使孔隙率增加。研究了GASAR制备Al-5Cu合金中气孔的形成机理,气孔在Al-Cu共晶相中形成,并随着液相与共晶相的界面的移动而生长。此外,还对不同孔隙率的GASAR制备Al-5Cu的压缩性能进行了测试。
Porous Al-5Cu alloys were fabricated by GASAR（the metal-gas eutectic method）method.Influences of temperature and hydrogen pressure on porosity of the GASAR Al-5Cu alloys were investigated.The results reveal that increase of temperature and hydrogen pressure can improve the hydrogen solubility in the liquid Al-Cu alloy,resulting in the increase of porosity.The mechanism of pore formation in GASAR Al-5Cu alloy is described：pores formed in eutectic phase and grown with the movement of liquid/eutectic solid interface.In addition,the compressive behavior of GASAR Al-5Cu was also analyzed.
出处
《特种铸造及有色合金》
CAS
CSCD
北大核心
2017年第4期423-427,共5页
Special Casting & Nonferrous Alloys
基金
中央高校基本科研业务费资助项目[DUT15JJ(G)01]
国家高技术研究发展计划(863计划)资助项目(2015AA042502)
