林一坚
,
张小岷
,
张文彪
,
章靖国
,
陈兰英
金属学报
<正> 利用激光熔化、基体自淬火实现快速凝固,能有效地抑制偏析而得到均匀组织。但是,我们发现固溶态Fe-10Ge合金经激光处理后反而出现大量球状第二相颗粒,其它低碳铁基合金也有类似现象。本文对此作了研究,确认这是由于铁基合金与氧形成偏晶系而出现的偏晶转变现象。 试样由工业纯Fe(含C0.018％以下)和高纯10％Ge经真空电弧炉冶炼而得。连续波激光束以
关键词:
(Fe-10Ge)-O偏晶系
,
rapid solidification
,
laser glazing
YAN Yuhe YANG Yongqiang ZHAO Changming Tianjin Institute of Textile Science and Technology
,
Tianjin
,
ChinaWU Weitao WANG Maocai Institute of Corrosion and Protection of Metals
,
Academia Sinica
,
Shenyang
,
ChinaLU Mengfu Tianjin Institute of Science and Technology
,
Tianjin
,
China Lecturer
,
Laser Processing Lab.
,
Tianjin Institute of Textile Science and Technology
,
Tianjin 300160
,
China
金属学报(英文版)
Partially amorphous Ni-Nb alloy was made by 1.91 kW cw CO_2 laser melt-quenching, and fully amorphous by 4.5 kW and 4.9 kW.The corrosion resistance of the amor- phous layer was improved by adding Cr.Potentiodynamic polarization curves show that the amorphous Ni_(50)Nb_(40)Cr_(10) is in more corrosion-resistant than the amorphous Ni_(60)Nb_(40)and 18-8 stainless steel.
关键词:
Ni-Nb allay
,
null
,
null
