Annealing embrittlement of Al89Fe10Zr1 amorphous alloy

被引：15

作者：

Wang, LM ^{[1
]}

Ma, LQ ^{[1
]}

Chen, MW ^{[1
]}

Kimura, H ^{[1
]}

Inoue, A ^{[1
]}

机构：

[1] Tohoku Univ, Mat Res Inst, Sendai, Miyagi 9808577, Japan

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2002年 / 325卷 / 1-2期

关键词：

Al-based amorphous alloy; annealing embrittlement; activation energy; atom probe;

D O I：

10.1016/S0921-5093(01)01418-6

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The mechanism of annealing embrittlement of Al89Fe10Zr1 amorphous alloy is studied. The activation energies for the ductile-brittle transition (E-b) and the precipitation of fcc-Al (E-x) are measured according to Kissinger plot and Arrhenius plot. Their values are E-b = 168-179 kJ mol(-1) and E-x = 173-204 kJ mol(-1), respectively. The correlation between the ductile-brittle transition and the precipitation of fcc-Al means that they are the same thermally activated processes. The analysis of solute concentrations in the alloy using atom probe field ion microscope shows that the precipitation of fcc-Al causes the increase of Fe and Zr concentrations in the residual amorphous phase during the annealing process. This is the main reason for the ductile-brittle transition. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：182 / 185

页数：4

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