On the fatigue crack propagation mechanism of a TiB2-reinforced high-modulus steel
On the fatigue crack propagation mechanism of a TiB2-reinforced high-modulus steel
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TiB2增强高模钢疲劳裂纹扩展机制研究
DOI：
10.1016/j.compositesb.2020.107960
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发表时间：
2020-06
期刊：
影响因子：
--
通讯作者：
Huang M X
中科院分区：
文献类型：
--
作者：
Li B C;Xu K;Chen R H;Li Y Z;Wang X G;Jiang C;Huang M X
首次研究了共晶凝固法制备的TiB2增强高模量钢的疲劳裂纹扩展机理。采用扫描电镜原位测试了TiB2增强钢的疲劳裂纹扩展速率，并与低碳铁素体钢的疲劳裂纹扩展速率进行了比较。结果表明，TiB_2增强钢的疲劳裂纹扩展比始终低于低碳钢。这主要是由于杨氏模量的提高和多种疲劳裂纹扩展机制导致不同裂纹闭合水平的外在原因。此外，断口分析表明，在疲劳裂纹扩展过程中几乎没有界面脱粘发生。结果表明，TiB_2增强钢的四种疲劳裂纹扩展行为是其优异的抗疲劳裂纹扩展性能的综合因素。
The fatigue crack propagation mechanism of a TiB2-reinforced high-modulus steel fabricated by eutectic solidification process was investigated for the first time. The fatigue crack growth rate (FCGR) of the TiB2-reinforced steel was measured by using in-situ scanning electron microscope (SEM) and it was compared with that of a low carbon ferritic steel. It showed that the FCGR of TiB2-reinforced steel was always lower than that of the low carbon steel. It can be mainly attributed to excellent intrinsic fatigue crack resistance due to improved Young's modulus and the extrinsic reasons ascribed to multiple fatigue crack propagation mechanisms resulting in different crack closure level. In addition, fractographic analysis revealed that almost no interfacial debonding occurred during fatigue crack propagation. It was found that the four types of fatigue crack propagation behavior existed in the studied TiB2-reinforced steel, which contribute to its excellent fatigue crack growth resistance in a synthetical way.
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揭示 TiB2 增强钢基复合材料的疲劳裂纹萌生机制
影响因子：
6
作者：
Chen rong hua;Li bo chuan;Li yi zhuang;Liu zhi cheng;Long xiang yun;Yi hong liang;Wang xiao gang;Jiang chao;Huang min xin
通讯作者：
Huang min xin
DOI：
10.1111/j.1460-2695.2005.00922.x
发表时间：
2005-09
影响因子：
3.7
作者：
C. Carloni;L. Nobile
通讯作者：
C. Carloni;L. Nobile
影响因子：
13.1
作者：
Kumar, G. B. Veeresh;Panigrahy, Pinaki Prasad;Rao, C. S. P.
通讯作者：
Rao, C. S. P.
DOI：
--
发表时间：
1994-08
期刊：
Chinese Journal of Materials Research
影响因子：
--
作者：
Jiang Yongqiu;Liu Jinhai;Wu Xubin
通讯作者：
Jiang Yongqiu;Liu Jinhai;Wu Xubin
影响因子：
4.4
作者：
Sokolova, O. A.;Kuehn, M.;Palkowski, H.
通讯作者：
Palkowski, H.