| 激光熔覆钴基合金与碳化钒的功能梯度层 |
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| 引用本文： | 徐国建,殷德洋,杭争翔,唱丽丽,范荣博,张翼飞.激光熔覆钴基合金与碳化钒的功能梯度层[J].激光与光电子学进展,2012(6):136-142. |
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| 作者姓名： | 徐国建 殷德洋 杭争翔 唱丽丽 范荣博 张翼飞 |
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| 作者单位： | 沈阳工业大学材料科学与工程学院;沈阳新松机器人自动化股份有限公司 |
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| 基金项目： | 辽宁省自然科学基金(20092047)资助课题 |
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| 摘 要： | 采用光纤激光器和同轴送粉系统在SUS304不锈钢表面制备出钴基合金(Stellite-6)与碳化钒(VC)混合粉末的激光熔覆层。试验中分别采用每层成分不变的多层熔覆工艺(普通熔覆工艺)和每层成分变化的功能梯度熔覆工艺,对比研究了两种熔覆工艺方法的熔覆层裂纹敏感性、组织特征和性能。结果表明,功能梯度熔覆层与普通熔覆层相比较,在成分、组织和性能基本相同的情况下,裂纹敏感性低,能有效地防止裂纹出现;另外,Stellite-6与VC混合合金粉末熔覆层的显微组织根据VC含量的不同,可以分为亚共晶组织和过共晶组织。
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| 关 键 词： | 材料 激光熔覆 钴基合金 碳化钒 裂纹敏感性 显微镜结构 |
Functionally Gradient Material Coating of Co-Based Alloy and VC Using Laser Cladding |
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| Xu Guojian,Yin Deyang,Hang Zhengxiang,Chang Lili,Fan Rongbo,Zhang Yifei.Functionally Gradient Material Coating of Co-Based Alloy and VC Using Laser Cladding[J].Laser & Optoelectronics Progress,2012(6):136-142. |
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| Authors: | Xu Guojian Yin Deyang Hang Zhengxiang Chang Lili Fan Rongbo Zhang Yifei |
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| Affiliation: | 1School of Materials Science and Engineering,Shenyang University of Technology, Shenyang,Liaoning 110178,China 2SIASUN Robot and Automation Co..Ltd.,Shenyang,Liaoning 110168,China) |
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| Abstract: | The mixed powders of Co-based alloy(stellite-6) and vanadium carbide(VC) are deposited on SUS304 stainless steel using fiber laser and coaxial laser cladding head.The two methods with a constant chemical composition multi-layer cladding and a functionally gradient material multi-layer cladding are investigated comparatively.The results show that the microstructures of the clad layer with the mixed powder of stellite-6 and VC can be classified into hypoeutectic structure and hypereutectic structure according to the concentration of VC;the functionally gradient material multi-layer cladding is an effective method to decrease the crack sensitivity. |
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| Keywords: | materials laser cladding Co-based alloy vanadium carbide crack sensitivity microstructure |
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