Control of austenite to martensite transformation through equal channel angular pressing aided by thermodynamic calculations

被引：12

作者：

Hajiakbari, F. ^{[1
]}

Nili-Ahmadabadi, M. ^{[1
]}

Poorganji, B. ^{[2
]}

Furuhara, T. ^{[2
]}

机构：

[1] Univ Tehran, Sch Met & Mat Engn, Tehran, Iran

[2] Tohoku Univ, Inst Mat Res, Sendai, Miyagi 980, Japan

来源：

ACTA MATERIALIA | 2010年 / 58卷 / 08期

基金：

美国国家科学基金会;

关键词：

Martensitic phase transformation; Driving force; Equal channel angular pressing; LOW-CARBON STEEL; START TEMPERATURE; GRAIN-SIZE; BAINITE; ALLOY;

D O I：

10.1016/j.actamat.2010.01.044

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The martensite start temperature and driving force were calculated for the austenite to martensite transformation of a dual-phase bianitic ferrite austenite steel at room temperature The mechanical energy was estimated during the first and the second pass of equal channel angular pressing (ECAP) The applied mechanical energy during the first pass is not enough to induce the austenite to martensite transformation. However. the mechanical energy during the second pass can provide the required energy for the martensite formation Microstructural observations by transmission electron microscopy and scanning electron microscopy of as-received and ECAPed samples confirm the formation of martensite during the second pass (C) 2010 Acta Materialia Inc Published by Elsevier Ltd All rights reserved

引用

页码：3073 / 3078

页数：6

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