摘要
研究了１３Ｎｉ５Ａ钢铆钉头部Ｎｉ－Ｃｒ－Ｂ－Ｓｉ合金激光熔覆层的组织、成分、显微硬度和在酸性介质中的抗腐蚀能力，并进行了实地考验．结果表明，采用激光功率密度为１．３×１０４Ｗ／ｃｍ２、扫描速度为５ｍｍ／ｓ的辐照工艺，获得了与基体呈冶金结合的无裂纹的熔覆涂层，其组织由Ｎｉ－Ｃｒ－Ｆｅ固溶体、Ｎｉ３Ｓｉ、Ｃｒ５Ｂ５及ＷＣ等相组成，显微硬度高出基体两倍多，并在酸性介质中具有优异的抗蚀性能．激光熔覆处理的铆钉经３７００ｈ实际生产考验后．明显优于未经．处理的铆钉．
Microstructure,chemical composition, microhardness and corrosion resistance of the laser-de posited Ni-Cr-B-Si alloy coat on the top of rivet made of 13Ni5A steel were investigated with these rivetsstanding trials in situ. The results showed that a crack-free deposited coat bonded firmly with parent metal isavailable under the conditions that the laser power density is 1. 3 × 10￣4 W/cm￣2 and scanning velosity 5 mm/s.The coat consists of .solid solution Ni-Cr-Fe and other phases such as Ni_3Si,Cr_5B_3 and WC,and its hardness isover three times as high as that of parent metal with high resistance to corrosion in acid medium. It wasproved that,after 3700 h in application, the laser-deposited rivets are significantly superior to those not deposited.
出处
《东北大学学报（自然科学版）》
EI
CAS
CSCD
1994年第4期403-407,共5页
Journal of Northeastern University(Natural Science)
关键词
13Ni5A钢
铆钉
镍基合金
激光熔覆
steel rivet
Ni-Cr-B-Si alloy
laser deposite
corrosion resistance.
