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论文类型：期刊论文

发表时间：2001-11-01

发表刊物：China Welding (English Edition)

收录刊物：Scopus、EI

卷号：10

期号：2

页面范围：99-103

ISSN号：10045341

摘要：The behavior of the reinforcement of submicron composite Al2O3p/6061 Al in molten pool during laser welding was studied. It was indicated that because there were the remarkable differences in thermal physical properties between matrix and reinforcement particulate, the reinforced particulate was pushed forward during molten pool solidification by the liquid-solid interface in matrix and the reinforced paniculate segregated in the weld. It resulted in noticeable degradation in properties of the welded joint. The technology methods to improve the behavior of reinforcement were also investigated. It was pointed out that the laser pulse frequency is the main welding parameter affecting the distributive state of reinforcement, and the theory basis was established for welding the material by laser beam.