中国激光, 2018, 45 (3): 0302006, 网络出版: 2018-03-20
宽带激光熔覆铁基非晶涂层的微观组织及形成机制 下载: 804次
Microstructures and Formation Mechanism of Fe-Based Amorphous Coatings by Broad-Band Laser Cladding
图 & 表
图 2. 激光熔覆非晶涂层的组织形貌。(a)熔覆层全貌;(b)结合区;(c)无组织特征区;(d)熔覆层表层
Fig. 2. Microstructure of amorphous coating prepared by laser cladding. (a) Full view of cladding layer; (b) bonding zone;(c) amorphous character zone; (d) surface of cladding layer
图 3. 熔池内沿深度方向不同位置处的温度随时间的变化
Fig. 3. Time evolution of temperature at different positions along depth direction of molten pool
图 4. t=2 s时熔池内深度方向的温度梯度和最大冷却速率
Fig. 4. Temperature gradient and the maximum cooling rate at t=2 s along depth direction of molten pool
图 5. G/R、εc与微观组织的关系。(a)不同位置的G/R及εc;(b)涂层微观组织
Fig. 5. Relationship between microstructure and G/R as well as that between microstructure and εc. (a) G/R and εc at different positions; (b) microstructure of coating
图 6. 不同扫描速度下G/R与εc间的关系
Fig. 6. Relationship between G/R and εc under different scanning speeds
表 1热物性参数
Table1. Thermal physical parameters
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王彦芳, 李豪, 孙旭, 宋增金, 李娟, 石志强. 宽带激光熔覆铁基非晶涂层的微观组织及形成机制[J]. 中国激光, 2018, 45(3): 0302006. Wang Yanfang, Li Hao, Sun Xu, Song Zengjin, Li Juan, Shi Zhiqiang. Microstructures and Formation Mechanism of Fe-Based Amorphous Coatings by Broad-Band Laser Cladding[J]. Chinese Journal of Lasers, 2018, 45(3): 0302006.