The characteristics of serration in Al0.5CoCrFeNi high entropy alloy

被引：67

作者：

Niu, Sizhe ^{[1
]}

Kou, Hongchao ^{[1
]}

Zhang, Yu ^{[1
]}

Wang, Jun ^{[1
]}

Li, Jinshan ^{[1
]}

机构：

[1] Northwestern Polytech Univ, State Key Lab Solidificat Proc, Xian 710072, Shaanxi, Peoples R China

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2017年 / 702卷

关键词：

High entropy alloys; PLC effect; Dynamic strain aging; BULK METALLIC-GLASS; TENSILE DEFORMATION; TEMPERATURE TENSILE; STRAIN-RATE; FLOW; SUPERALLOY; BEHAVIOR; NI;

D O I：

10.1016/j.msea.2017.05.075

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Serrated flow in Al0.5CoCrFeNi high entropy alloy (HEA) was studied at the temperature range of 200-500 degrees C with strain rates from 10(-3) s(-1) to 10(-4) s(-1). Results showed that serration type would transform from type A to type A + B, and eventually evolved into type B+C with the increasing temperature and decreasing strain rate. The dynamic strain aging was the reason for the Portevin-Le Chatelier (PLC) effect, and Al played a crucial role in the interaction between solute atoms and dislocation. The characteristics of serration are revealed through statistics firstly in HEAs.

引用

页码：96 / 103

页数：8

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