摘要
本文报道用高压淬火的方法制备出了Zr_(60)Ni_(20)Al_(20)大块金属玻璃。以经典成按理论为依据,估计了压力对晶核生长速度的影响,在高压下过冷熔体的晶体生长速度比常压下的晶体生长速度低几个数量级,这说明高压淬火之所以有利于金属玻璃的形成,主要是因为压力抑制了过冷熔体内的晶体生长过程。
A bulk Zr60Ni20Al20 amorphous alloy was prepared by using high pressure quenching technique. The crystal growth velocity of the undercooled alloy melts at high pressure was estimated much smaller than at normal pressure, confirming that the high pressure quenching facili- tates the formation of metallic glass by suppressing the crystal growth.
出处
《高压物理学报》
CAS
CSCD
北大核心
1992年第3期212-216,共5页
Chinese Journal of High Pressure Physics
关键词
高压
淬火
晶体生长速度
金属玻璃
high pressure quenching, crystal growth velocity, metallic glass.
