Dissolution of cementite in carbon steels by ball drop deformation and laser heating

被引：13

作者：

Todaka, Yoshikazu ^{[1
]}

Umemoto, Minoru ^{[1
]}

Ohno, Akifumi ^{[1
]}

Suzuki, Mayumi ^{[1
]}

Kawabata, Yuji ^{[1
]}

Tsuchiya, Koichi ^{[1
]}

机构：

[1] Toyohashi Univ Technol, Dept Prod Syst Engn, Aichi 4418580, Japan

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2007年 / 434卷

关键词：

cementite; pearlite; spheroidite deformation; dissolution; structure;

D O I：

10.1016/j.jallcom.2006.08.123

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The dissolution behavior of cementite by heavy deformation in eutectoid steels with pearlitic and spheroidite structures was studied. To examine the thermal effect on the cementite dissolution, pulsed laser heating was also carried out. By ball drop deformation, the cementite dissolved and the matrix became nano-grained. After pulsed laser heating, re-austenitized region transformed to fresh martensite during quenching. The boundary between the re-austenitized region and matrix exhibited similar microstructure with that observed in specimens subjected to ball drop deformation. It was suggested that the dissolution of cementite by heavy deformation at high strain rate were probably due to thermal effect, that is, re-austenitization. (C) 2006 Elsevier B.V. All rights reserved.

引用

页码：497 / 500

页数：4

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