Behaviors of 40Cr steel treated by laser quenching on impact abrasive wear
Behaviors of 40Cr steel treated by laser quenching on impact abrasive wear
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DOI：
10.1016/j.optlastec.2018.01.039
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发表时间：
2018-07-01
影响因子：
5
通讯作者：
Luo, Jingshuai
中科院分区：
文献类型：
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作者：
Chen, Zhikai;Zhu, Qinghai;Luo, Jingshuai
目前的工作是通过激光淬火来提高40Cr钢的抗冲击磨料磨损性能。激光淬火后，原始区域和淬火区域之间呈现出明显的微观结构。由于温度和冷却速度的影响，淬火层的相组合在深度上存在明显差异。对样品的抗冲击磨料磨损性能进行了实验研究，并根据3次重复试验的平均质量损失来评估改进程度。采用SEM、OM、EDS等手段对磨损表面进行检测，结果表明，冲击磨料磨损加工过程中出现磨粒磨损、冲击效应和滚动接触疲劳三种典型失效模式。根据不同的磨损表面轮廓，分别指出了基体和淬火样品的主要失效模式，这与冲击磨粒磨损的结果显着一致。 (C) 2018 Elsevier Ltd. 保留所有权利。
In present work, laser quenching had been carried out to improve the impact abrasive wear resistance of 40Cr steel. The distinct microstructure between original and quenched region was demonstrated after laser quenching. Since the effect of temperature and cooling rate, the phase combinations were apparently different for quenched layer in depth. The impact abrasive wear resistance of sample was experimentally investigated and the improved level was assessed in light of the average mass loss of three repetitive tests. Worn surface was detected by means of SEM, OM and EDS, and results showed that three typical failure modes were performed during the processing of impact abrasive wear, including abrasive wear, impact effect and rolling contact fatigue. Basing on the different worn surface profile, the mainly failure mode was respectively pointed out for matrix and quenched sample, which was significantly in accordance with the result of impact abrasive wear. (C) 2018 Elsevier Ltd. All rights reserved.