Comprehensive improvement of strength and ductility in CLAM steel subjected to TEU: The role of heterogeneous microstructure
Comprehensive improvement of strength and ductility in CLAM steel subjected to TEU: The role of heterogeneous microstructure
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经过 TEU 处理的 CLAM 钢强度和延展性的综合改善：异质微观结构的作用
DOI：
10.1016/j.jnucmat.2022.153898
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发表时间：
2022-07
影响因子：
3.1
通讯作者：
Ping Li
中科院分区：
文献类型：
--
作者：
Kemin Xue;Wenchun Tian;Qinghang Hu;Siliang Yan;Ping Li
To improve the comprehensive properties of CLAM steel and expecting good performance in service conditions, twist extrusion and upsetting (TEU) based thermo-mechanical treatment (TMT) was introduced into the steel at 600°C, 670°C, and 740°C. Optical microscopy (OM), X-ray diffraction (XRD), scanning electron microscopy (SEM), and transmission electron microscopy (TEM) was used to characterize the microstructural evolution during the deformation. Uniaxial tension test was used to evaluate the tensile mechanical property. The results show that the grain size and dislocation density of the processed samples decrease from the as-received condition, but are higher than that in the as-tempered conditions. The particle sizes of M 23 C 6 and MX in the TEUed samples are lower than that in the as-tempered case, which contribute a lot to the yield strength. The yield strength of the TEUed CLAM steel decrease with the increase of deformation temperature and a good match in strength and ductility, relating to heterogeneous microstructure, has been achieved at the deformation temperature of 670°C (yield stress: 853.59MPa, ultimate tensile stress: 992.4MPa, elongation: 15.7%). The K value and exponent in the Hall-Petch relationship should be modified owing to the volume fraction of martensite, which is harder than ferrite and causes interface elastic mismatch stress, is different at different temperatures.
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影响因子：
2.3
作者：
Xue Ke-min;Sheng Jie;Yang Sai-liang;Tian Wenchun;L. Ping
通讯作者：
Xue Ke-min;Sheng Jie;Yang Sai-liang;Tian Wenchun;L. Ping
影响因子：
5.6
作者：
U. Iqbal;V. S. Kumar;S. Gopalakannan
通讯作者：
U. Iqbal;V. S. Kumar;S. Gopalakannan
DOI：
10.1016/j.msea.2020.140364
发表时间：
2021-01
期刊：
Materials Science and Engineering: A
影响因子：
--
作者：
Hao He;Hui Wang;K. He;Xue Liang;Xuefei Huang
通讯作者：
Hao He;Hui Wang;K. He;Xue Liang;Xuefei Huang
DOI：
10.1007/bf02642436
发表时间：
1972-01-01
期刊：
METALLURGICAL TRANSACTIONS
影响因子：
--
作者：
SPEICH, GR;LESLIE, WC
通讯作者：
LESLIE, WC
影响因子：
4.7
作者：
Guowei Wang;Lan Huang;Xin Zhan;Liming Tan;Zijun Qin;Wuqiang He;Feng Liu
通讯作者：
Guowei Wang;Lan Huang;Xin Zhan;Liming Tan;Zijun Qin;Wuqiang He;Feng Liu