激光与光电子学进展, 2004, 41 (6): 42, 网络出版: 2006-06-12
过渡合金层对铁基高硬度多层激光堆焊厚熔复层组织性能的影响
The Influence of Transition Alloy Layer on Microstructure Properties of Laser Multi-layer Bead Welding
摘要
通过采用45#钢基体材料,在不预热情况下增加过渡合金熔覆层,再选用专用的高硬度焊丝进行堆焊实验;由于所加的合金元素改变了激光熔覆层内奥氏体分数,使基体和堆焊层的塑韧性增加,进而抑制了裂纹的产生;同时又由于合金元素能形成碳化物,因此提高了堆焊层的硬度。
Abstract
Using 45# steel as matrix material, the laser bead welding experiment is proceeded by adding transi-tion alloy cladding layer and choosing special welding wire in the case of no proheating. The added alloying agents change the percentage of Austenite in the laser cladding layer, so increasing the plasticity and ductility of the matrix and bead welding layer, and then depressing the cracks. Meanwhile, alloying agents can form carbides, so the hard-ness of bead welding layer is increased.
方志民, 骆芳, 姚建华, 张群莉. 过渡合金层对铁基高硬度多层激光堆焊厚熔复层组织性能的影响[J]. 激光与光电子学进展, 2004, 41(6): 42. 方志民, 骆芳, 姚建华, 张群莉. The Influence of Transition Alloy Layer on Microstructure Properties of Laser Multi-layer Bead Welding[J]. Laser & Optoelectronics Progress, 2004, 41(6): 42.