Laser/argon-arc strengthening of titanium alloy surface with Deloro matrix composites
作者： Jianing Li , Yan Tian , Liwei Zhang , Xiaolin Wang , Xuegang Wang
DOI: 10.1016/J.OPTLASTEC.2019.105911
关键词:
摘要: Abstract The hard composites were fabricated by an argon-arc clad (AAC) of the Deloro22-Si3N4-B4C mixed powders on TA1 titanium alloy substrate, which exhibited a relative coarse compact microstructure; then this substrate surface was treated laser beam, microstructure evolution and formation mechanism such AAC under actions strengthening (LSS) technique also vacuum tempering process will be explored. Research results indicated that twice heat treatments changed greatly growth directions crystals, resulting in net-like large amount atoms could obtain sufficient energy to exceed potential barrier due extreme high temperature produced molten pool (laser-pool), forming twin crystals; able remove accumulation residual stress certain degree, improving plastic toughness performance LSS composites. To have quantitative understanding AAC/LSS technologies effects, paper has provided technological/related theoretical basis modify ACC alloy.
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