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Alternative TitleMicrostructure and mechanical properties of NiCoCrAlY coating on compacted graphite iron by laser cladding
刘昊; 虞钢; 何秀丽; 李少霞; 朱天辉; 宁伟健; 郑彩云
Source Publication材料热处理学报
Other AbstractConsidering the problem of quench hardening and cracking at the interface of laser cladding coating on the cast iron, a method combined laser alloy and laser cladding was proposed to produce NiCoCrAlY coating on compacted graphite iron. The dilution, microstructure and microhardness of the coating were investigated by means of optical microscope, scanning electron microscopy, X-ray diffractometer, Vickers hardness tester. The bonding characteristics and mechanical properties of the layer were evaluated by three-point bending test. The results show that martensite turns to tempered sorbite in heat affected zone by the laser alloy cladding method, thus the depth of hardening layer decreases. Simultaneously, the bonding characteristics and plasticity are improved, and the bending strength is raised to 891 MPa. The fracture morphology shows a good bonding between coating and substrate, and also a combination of cleavage fracture and dimple fracture. ©, 2015, Editorial Office of Transactions of Materials and Heat Treatment. All right reserved.
Keyword蠕墨铸铁 激光熔覆 稀释率 显微组织 抗弯强度
Indexed ByEI ; CSCD
Funding Organization国家自然科学基金(11272316,11272317) ; 江苏高校优势学科建设工程资助项目
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Cited Times:5[CSCD]   [CSCD Record]
Document Type期刊论文
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GB/T 7714
刘昊,虞钢,何秀丽,等. 蠕墨铸铁激光合金化熔覆的界面组织及性能[J]. 材料热处理学报,2015,36(3):171-176.
APA 刘昊.,虞钢.,何秀丽.,李少霞.,朱天辉.,...&郑彩云.(2015).蠕墨铸铁激光合金化熔覆的界面组织及性能.材料热处理学报,36(3),171-176.
MLA 刘昊,et al."蠕墨铸铁激光合金化熔覆的界面组织及性能".材料热处理学报 36.3(2015):171-176.
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