点击次数：

论文类型：期刊论文

发表时间：2011-12-01

发表刊物：METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE

收录刊物：Scopus、SCIE、EI

卷号：42A

期号：13

页面范围：3853-3857

ISSN号：1073-5623

摘要：The microsegregation/macrosegregation of Hastelloy C-276 weld joint in pulsed laser welding was investigated by scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDS), and electron probe microanalyzer (EMPA). The results indicated that during pulsed laser welding, the microsegregation was weakened compared with other welding process, and then the Brody-Flemings (BF) model with revised k was proposed to evaluate the element microsegregation in solid-solution strengthened Ni-based alloys. Also, no phenomenal macrosegregation was observed in the weld joint compared with the base metal.