Influence of minor Si addition on the glass-forming ability and mechanical properties of Pd40Ni40P20 alloy

被引：60

作者：

Chen, N. ^{[1
]}

Louzguine-Luzgin, D. V. ^{[1
]}

Xie, G. Q. ^{[2
]}

Wada, T. ^{[2
]}

Inoue, A. ^{[1
]}

机构：

[1] Tohoku Univ, WPI Adv Inst Mat Res, Aoba Ku, Sendai, Miyagi 9808577, Japan

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

来源：

ACTA MATERIALIA | 2009年 / 57卷 / 09期

关键词：

Metallic glasses; Glass-forming ability; Ductility; Fracture; BULK METALLIC GLASSES; FRACTURE MECHANISMS; DYNAMIC FRACTURE; INSTABILITY; TENSILE; PROPAGATION; DIFFERENCE; BEHAVIOR; FATIGUE; SILICON;

D O I：

10.1016/j.actamat.2009.02.028

中图分类号：

T [工业技术];

学科分类号：

120111 [工业工程];

摘要：

The influence of a minor Si addition oil the glass-forming ability and mechanical properties of Pd40Ni40P20 alloy was investigated. It is suggested that the minor Si addition can adjust the composition to be closer to eutectic, which favors a large undercooling. Furthermore, Si addition led to an enhancement in the ductility of Pd-Ni-P bulk metallic glasses. Simultaneously it is of great interest that there are nanoscale and microscale wavy steps observed on the fracture surface of Pd40Ni40Si4P16 metallic glass. It is Suggested that a quickly running crack dissipates excess energy in terms of stress wave, leaving Such wavy traces oil the fracture surface of the deformed Pd-based metallic glass. (C) 2009 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：2775 / 2780

页数：6

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