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Research on Microstructure and Property of Laser WC Alloying on 45 Steel Surface
Author(s): ZHANG Wei, SHI Shuqin, WANG Ruiquan, LIN Bo
Pages: 123-
124
Year: 2011
Issue:
8
Journal: Hot Working Technology
Keyword: 表面改性; 性能; 激光合金化; 45钢; 显微组织; 硬度;
Abstract: 在45钢表面进行了碳化钨(WC)激光合金化实验,利用金相显微镜、维氏硬度计等设备检测了合金化层的组织和性能.实验表明:激光合金化层组织致密,晶粒细化,与基体呈冶金结合.其中,合金化区为含碳量过饱和的奥氏体树枝晶组织,热影响区为板条状淬火马氏体组织.合金化区平均硬度700 HV0.2,相变硬化区平均硬度550 HV0.2,硬度呈梯度过渡.通过与氮化试样的比较,表明激光合金化试样的强化层深度、平均硬度...
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