钛钢复合板双金属的流变行为及轧制制备

doi:10.11896/cldb.18120063

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Abstract Based on the flow deformation rule of titanium/steel clad plate obtained by uniaxial compression tests, hot rolling and heat treatment were conducted on the titanium/steel clad plates under diverse process conditions. Further, the microstructure, interface features and mechanical properties of titanium/steel clad plate treated by different processes were studied systematically. As could be seen from the results, the increase of the thickness ratio and deformation temperature enlarged the difference of the two metal in flowability during the deformation process. According to the stress-strain curve, the prediction model of deformation resistance was established by adopting Levenberg-Marquardt method, and its goodness-of-fit with the measured stress value was 0.961. The titanium/steel clad plate achieved optimal mechanical property under the condition of large reduction within 800 ℃ to 900 ℃. When the heat treatment was carried out at 750 ℃, there existed thick and nonuniform TiC layer at the interface of titanium/steel clad plate. While the TiC layer at interface turned straight and uniform after heat treatment under 850 ℃. The interface layer was further dominated by TiFe, and TiC was distributed on both sides of TiFe, showing a stratified distribution after heat treatment under 950 ℃. Meanwhile, the precipitate of TiC appears along the grain boundary or within the ferrite matrix, and the size of precipitations which could be controlled by raising the cooling rate.

Key words： titanium/steel clad plate bimetallic flow rheological curve rolling and heat treatment precipitation of TiC

Published: 28 October 2019

CLC number:

TB741

Fund:This work was financially supported by the National Key Research and Development Plan (2016YFB0101606).

About author:: Shiwei Tian received his bachelor degree in June 2015 from University of Science and Technology Beijing (USTB) in materials science and engineering. From September 2015 to December 2018, he has been studying for a Doctor’s degree in material science and engineering at the Institute of Engineering Technology of USTB. Currently, He has participated in a National Key Research and Development Plan, and his research direction is microstructure characterization and mecha-nical properties of advanced materials;Haitao Jiang, as a professor and Doctoral tutor in USTB. Since 2006, he has been working in the Natio-nal Engineering Research Center of Advanced Rolling in USTB mainly on the development of steel and iron materials and non-ferrous metals materials and also on the research of the production of plate and strip. He has a dozen programs of NSFC(Natural Science Foundation of China), National Key Research and Development Plan and the Beijing Municipal Science and Technology plan projects. He has also published over two hundred academic papers.

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	TIAN Shiwei
	JIANG Haitao
	LIU Jixiong
	ZHANG Guihua
	XU Zhe

Cite this article:

TIAN Shiwei,JIANG Haitao,LIU Jixiong, et al. Rheological Behavior and Hot Rolling Process of Titanium/Steel Clad Plate[J]. Materials Reports, 2019, 33(24): 4141-4146.

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http://www.mater-rep.com/EN/10.11896/cldb.18120063 OR http://www.mater-rep.com/EN/Y2019/V33/I24/4141

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