Direct observation of deformation in semi-solid carbon steel

被引：67

作者：

Nagira, T. ^{[1
,2
]}

Gourlay, C. M. ^{[2
]}

Sugiyama, A. ^{[3
]}

Uesugi, M. ^{[1
]}

Kanzawa, Y. ^{[1
]}

Yoshiya, M. ^{[1
]}

Uesugi, K. ^{[4
]}

Umetani, K. ^{[4
]}

Yasuda, H. ^{[1
]}

机构：

[1] Osaka Univ, Dept Adapt Machine Syst, Suita, Osaka 5650871, Japan

[2] Univ London Imperial Coll Sci Technol & Med, Dept Mat, London SW7 2AZ, England

[3] Osaka Sangyo Univ, Dept Entrepreneur Engn, Osaka 5748530, Japan

[4] Japan Synchrotron Radiat Res Inst, Sayo, Hyogo 6795198, Japan

来源：

SCRIPTA MATERIALIA | 2011年 / 64卷 / 12期

基金：

英国工程与自然科学研究理事会;

关键词：

Steels; X-ray synchrotron radiation; Dilatancy; Agglomeration; DENDRITIC SOLIDIFICATION; EQUIAXED MICROSTRUCTURE; ALLOYS; STATE; BEHAVIOR; GROWTH; METALS;

D O I：

10.1016/j.scriptamat.2011.03.009

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The dynamics of globule motion are studied in situ during the deformation of globular semi-solid steel (Fe-2C-0.9Mn-0.5Si in mass%). Samples with globular morphology and 55-65% effective solid fraction were deformed in direct shear at a shear rate of similar to 10(-3) s(-1) during time-resolved synchrotron X-ray imaging. Globule rearrangement involving dilation was the main deformation mechanism. Agglomeration is shown to significantly influence rearrangement by increasing the effective size of structural units. (C) 2011 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：1129 / 1132

页数：4

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