ISIJ International
Online ISSN : 1347-5460
Print ISSN : 0915-1559
ISSN-L : 0915-1559
Mechanical Properties
Grain Boundary Pop-in, Yield Point Phenomenon and Carbon Segregation in Aged Low Carbon Steel
Zhengyan ShenBilei WangGaofei LiangYunhu ZhangKe HanChangjiang Song
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2018 Volume 58 Issue 2 Pages 373-375

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Abstract

Nanoindentation measurements, tensile tests, and carbon concentration analyses were conducted to study yield behaviors in as-received, aged, and prestrained low carbon steel. In aged sample, steel showed both yield point phenomenon (YPP) and grain boundary (GB) pop-ins besides initial pop-in, while steels in other two states showed no YPP and only the initial pop-in. 3-dimensional atom probe (3DAP) analysis in both as-received and aged samples showed that carbon content in the matrix decreased significantly after aging treatment, which is believed to contribute to the occurrence of both YPP and GB pop-in.

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© 2018 by The Iron and Steel Institute of Japan
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