Ageing behaviour of Pd40Cu30Ni10P20 bulk metallic glass during long-time isothermal annealing

	Ageing behaviour of Pd40Cu30Ni10P20 bulk metallic glass during long-time isothermal annealing
	Wang, JF; Liu, L; Xiao, JZ; Zhang, T; Wang, BY; Zhou, CL; Long, W; Wang BY(王宝义); Zhou CL(周春兰); Wei L(魏龙)
刊名	JOURNAL OF PHYSICS D-APPLIED PHYSICS
	2005
卷号	38 期号:6 页码:946-949
通讯作者	Huazhong Univ Sci & Technol, State Key Lab Plast Forming Stimulat & Die & Moul, Wuhan 430074, Peoples R China ; Beihang Univ, Dept Mat Sci & Engn, Beijing 100083, Peoples R China ; Chinese Acad Sci, Inst High Energy Phys, Lab Nucl Anal & Technol, Beijing 100039, Peoples R China
英文摘要	In this paper, positron annihilation spectroscopy and differential scanning calorimetry were applied to study the structural relaxation of Pd40Cu30Ni10P20 bulk metallic glass during long-time annealing at 523 K. It was found that the relaxation of the alloy follows a two-stage process. In the initial stage, with increasing annealing time, the height of the glass transition peak (namely Delta c(p)) increased, while the average positron lifetime decreased. The isothermal relaxation kinetics obeys a Kohlrausch law with exponent of beta = 0.5 +/- 0.03. However, when the annealing time is beyond 32 h, the height of the glass transition peak (Delta c(p)) decreased, and the average positron lifetime increased. This is possibly due to the enhancement of the topological short-range ordering, which results in the generation of new defects on the interfaces between the solid-like regions and the liquid-like regions in amorphous phase. The experimental results were tentatively discussed in terms of free-volume theory and percolation theory.
学科主题	Physics
类目[WOS]	Physics, Applied
研究领域[WOS]	Physics
原文出处	SCI
语种	英语
WOS记录号	WOS:000229302700027
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/238785]
专题	高能物理研究所_多学科研究中心中国科学院高能物理研究所_中国散裂中子源
作者单位	中国科学院高能物理研究所
推荐引用方式 GB/T 7714	Wang, JF,Liu, L,Xiao, JZ,et al. Ageing behaviour of Pd40Cu30Ni10P20 bulk metallic glass during long-time isothermal annealing[J]. JOURNAL OF PHYSICS D-APPLIED PHYSICS,2005,38(6):946-949.
APA	Wang, JF.,Liu, L.,Xiao, JZ.,Zhang, T.,Wang, BY.,...&魏龙.(2005).Ageing behaviour of Pd40Cu30Ni10P20 bulk metallic glass during long-time isothermal annealing.JOURNAL OF PHYSICS D-APPLIED PHYSICS,38(6),946-949.
MLA	Wang, JF,et al."Ageing behaviour of Pd40Cu30Ni10P20 bulk metallic glass during long-time isothermal annealing".JOURNAL OF PHYSICS D-APPLIED PHYSICS 38.6(2005):946-949.