Complex effects of alloy composition and porosity on the phase transformations and mechanical properties of powder metallurgy steels

被引：29

作者：

Park, Jooyoung ^{[1
]}

Lee, Sangbong ^{[2
]}

Kang, Singon ^{[3
]}

Jeon, Jonggyu ^{[1
]}

Lee, Seong Hyeon ^{[2
]}

Kim, Heung-kyu ^{[2
]}

Choi, Hyunjoo ^{[1
]}

机构：

[1] Kookmin Univ, Sch Adv Mat Engn, Seoul 136702, South Korea

[2] Kookmin Univ, Dept Automot Engn, Seoul 136702, South Korea

[3] Colorado Sch Mines, Adv Steel Proc & Prod Res Ctr, Golden, CO 80401 USA

来源：

POWDER TECHNOLOGY | 2015年 / 284卷

基金：

新加坡国家研究基金会;

关键词：

Powder metallurgy; Porosity; Mechanical property; Phase transformation; AUSTENITE GRAIN-SIZE; FRACTURE-BEHAVIOR; MICROSTRUCTURE; MARTENSITE; ELEMENTS; BAINITE; DENSITY; CARBON; IMPACT; IRON;

D O I：

10.1016/j.powtec.2015.07.029

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

In this study, the combined effects of alloy compositions and porosity in powder metallurgy (P/M) steels on the phase transformation and mechanical properties were investigated. First, carbon steels and Astaloy CrM (Fe-3.0 wt.% Cr-0.5 wt.% Mo) steels with various porosities were produced using powder metallurgy routes, and their microstructure and mechanical properties were examined. Then, the phase transformation and resulting mechanical properties of porosity-free samples were simulated using the commercial software JMatPro (R) to examine the sole effect of alloy composition. By combining the porosity effect fitting models with the JMatPro results, we attempted to formulate a mathematical material model that describes the mechanical behaviors of the P/M steels. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：459 / 466

页数：8

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