In-situ X-ray diffraction evidence of dynamic transformation of austenite to ferrite during hot compression test in the single austenite phase field

被引：18

作者：

Aranas, Clodualdo, Jr. ^{[1
]}

Rodrigues, Samuel ^{[2
]}

Siciliano, Fulvio ^{[3
]}

Jonas, John ^{[4
]}

机构：

[1] Univ New Brunswick, Mech Engn, Fredericton, NB E3B 5A3, Canada

[2] Fed Inst Maranhao, Dept Mat Engn, BR-65075441 Sao Luis, Maranhao, Brazil

[3] Dynam Syst Inc, 323 NY 355, Poestenkill, NY 12140 USA

[4] McGill Univ, Mat Engn, Montreal, PQ H3A 0C5, Canada

来源：

SCRIPTA MATERIALIA | 2020年 / 177卷

基金：

加拿大自然科学与工程研究理事会;

关键词：

Thermomechanical processing; Phase transformations; X-ray diffraction; Steel; Dynamic transformation; STRAIN-INDUCED TRANSFORMATION;

D O I：

10.1016/j.scriptamat.2019.10.008

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Dynamic transformation (DT) of austenite to ferrite can take place in the single austenite phase field during thermomechanical processing as shown in the literature. However, despite significant progress on this topic, limited real-time evidence of DT has been published. To address this concern, an in-situ X-ray diffraction measurement was carried out on a pipeline steel before, during and after hot compression. The appearance of ferrite peaks is evident during deformation and these peaks disappear after 9 s of isothermal holding. This work provides an in-situ evidence of both forward and backward dynamic transformation complemented with energy calculations to validate the observations. (C) 2019 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：86 / 90

页数：5

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