Dual-gradient bainite steel matrix composite fabricated by direct laser deposition
Dual-gradient bainite steel matrix composite fabricated by direct laser deposition
复制标题
直接激光沉积制备双梯度贝氏体钢基复合材料
DOI:
10.1016/j.matlet.2018.12.011
复制
发表时间:
2019-03
影响因子:
3
通讯作者:
Yu Meng
中科院分区:
文献类型:
--
作者:
Tang Yanchuan;Yang Haichao;Huang Daosi;Zhao Longzhi;Liu Dejia;Shen Mingxue;Hu Yong;Zhao Mingjuan;Zhang Jian;Li Jin;Yu Meng
A dual-gradient bainite steel matrix composite was fabricated by direct laser deposition (DLD) method. The decomposition of WC (reinforcements) during DLD is utilized to adjust the gradient microstructure of the composite. Both the matrix morphology and the reinforcement distribution present obvious gradient variation along the deposition direction. The microhardness and impact toughness exhibit the opposite tendency from the bottom to top of the composite, which shows a good agreement with the gradient microstructure. The surface microhardness and impact toughness of the dual-gradient composite are 510 HV and 75 J/cm2, respectively. The hardness and toughness combination of the composite is superior to most steels for railway frog. The dual-gradient composite has great potential in improving the performance of railway frog.
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DOI:
10.1016/j.msea.2017.12.003
发表时间:
2018-01-18
影响因子:
6.4
作者:
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通讯作者:
Wu, Xinhua
影响因子:
3.1
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影响因子:
3
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通讯作者:
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影响因子:
13.1
作者:
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