期刊
MATERIALS & DESIGN
卷 114, 期 -, 页码 102-110出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.matdes.2016.10.049
关键词
Nanostructure; Pearlite; High-temperature deformation; Cooling process; Ultra-high strength
资金
- Natural Science Foundation of China [51471146]
In this study, a new type of pearlite steel, 80CrSiV, is designed and the effects of the cooling rate, final cooling temperature, deformation temperature and level of deformation on the microstructures and mechanical properties of the steel are determined through thermal simulation, scanning electron microscopy, transmission electron microscopy, hardness and tensile tests. Results show that the microstructures and mechanical properties of the steel are significantly affected by the cooling rate after deformation and the final cooling temperature but are only slightly affected by the deformation temperature and level of deformation. A full pearlite microstructure with a hardness of HRC50.3, a tensile strength of 1715 MPa and an elongation not less than 17.9% can be obtained under the condition of a cooling rate of 120 degrees C.min(-1) and a final cooling temperature of 550 degrees C. (C) 2016 Elsevier Ltd. All rights reserved.
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