Microstructure Evolution During Continuous Cooling in AISI 5140 Steel Processed by Induction Heating Chromizing
Microstructure Evolution During Continuous Cooling in AISI 5140 Steel Processed by Induction Heating Chromizing
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感应加热渗铬处理的 AISI 5140 钢连续冷却过程中的微观结构演变
DOI：
10.1007/s11665-017-2942-x
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发表时间：
2017-10
影响因子：
2.3
通讯作者：
Yu Hongbing
中科院分区：
文献类型：
--
作者：
Hu Jianjun;Ma Chaoping;Yang Xian;Xu Hongbin;Guo Ning;Yu Hongbing
在这项研究中，感应加热渗铬（IHC）和箱式炉加热渗铬（BFHC）进行了商业AISI 5140钢分别。对渗铬试样的显微组织、显微硬度和耐磨性进行了表征。结果表明，由于粉末间的预压应力，IHC试样具有较厚的Cr涂层和较强的界面结合。在界面附近形成了合金化珠光体（AC层）、细珠光体区（FP区）和贫碳区（CP区）三种组织。其主要原因是不同的Cr和C含量对珠光体相和形貌的影响不同。IHC样品由于其比BFHC样品更强的界面结合强度而显示出更好的磨损性能。讨论了CP区的形成机理及其对显微硬度和耐磨性的影响。
In this study, induction heating chromizing (IHC) and box-type furnace heating chromizing (BFHC) were conducted on commercial AISI 5140 steels, respectively. Microstructure, microhardness and wear resistance of the chromized samples were characterized. The results show that the IHC samples have thicker Cr coating layer and stronger interface bond due to pre-compressive stress among the packed powders. Three kinds of microstructures including alloyed cementite (AC-layer), fine pearlite zone (FP-zone) and carbon-poor zone (CP-zone) are formed near the interface in the IHC samples. The main reason given for this is that different contents of Cr and C have different effects on pearlite phase and morphology. The IHC sample shows better wear properties due to its stronger interface bonding strength than that of the BFHC sample. The formation mechanism of CP-zone and its influences on microhardness and wear resistance are also discussed.
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影响因子：
1.1
作者：
Hu Jianjun;Ma Chaoping;Xu Hongbin;Guo Ning;Hou Tianfeng
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DOI：
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期刊：
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影响因子：
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DOI：
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发表时间：
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影响因子：
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