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Serrated flow and failure behaviors of a Hadfield steel at various strain rates under extensometer-measured strain control tensile load

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成果类型:
期刊论文
作者:
Zhang, Liqiang;Guo, Pengcheng*;Wang, Guan;Liu, Shuai
通讯作者:
Guo, Pengcheng
作者机构:
[Guo, Pengcheng; Zhang, Liqiang] Cent South Univ Forestry & Technol, Coll Mech & Elect Engn, Changsha 410004, Peoples R China.
[Wang, Guan] Ningxia Univ, Coll Mech Engn, Yinchuan 750021, Ningxia, Peoples R China.
[Liu, Shuai] North China Univ Sci & Technol, Coll Met & Energy, Tangshan, Peoples R China.
通讯机构:
[Guo, Pengcheng] C
Cent South Univ Forestry & Technol, Coll Mech & Elect Engn, Changsha 410004, Peoples R China.
语种:
英文
关键词:
Dilatometers;Displacement control;Manganese steel;Strain control;Deformation band;Dynamic strain ageing;Failure behaviors;High strain rates;Low strain rates;Serrated flow;Strain levels;Tensile loads;Strain rate
期刊:
Journal of Materials Research and Technology
ISSN:
2238-7854
年:
2020
卷:
9
期:
2
页码:
1500-1508
基金类别:
This work was supported by the National Natural Science Foundation of China (Grant No. 51801063 ), the Natural Science Foundation of Hunan Province (No. 2019JJ50586 , No. 2018JJ2681 ) and the Scientific Research Project of Hunan Provincial Department of Education (No. 18B193 ).
机构署名:
本校为第一且通讯机构
院系归属:
机电工程学院
摘要:
A Hadfield steel has been investigated to clarify the serrated flow and to explore the failure behavior at room temperature. The tensile experiments were performed under extensometer-measured strain control, rather than under conventional cross-head displacement control, at strain rates ranging from 6»×»10-3 s-1 to 6»×»10-6 s-1. Three types of serrations, including type A, B and C ones, are observed. The occurrence of different types of serrations depends on both strain rate and strain level. The type C serration is identified in Hadfield...

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