摘要
为了满足在990~1010℃温度下钎焊不锈钢的需要,研究了一种Ni-Mn-Si-Cu-B-Ce钎料。对钎料的熔化特性和润湿性、接头组织以及钎焊搭接接头的剪切强度进行了研究。结果表明微量元素B、Ce元素可使BNi66Mn Si Cu钎料的熔化温度显著降低,从而满足在990~1010℃温度下钎焊不锈钢,加入微量元素B、Ce元素后使钎料对1Cr18Ni9Ti不锈钢的润湿性影响较小,但钎料的剪切强度提高约1.3倍,利用Ni-Mn-Si-Cu-B-Ce钎料在钎焊1Cr18Ni9Ti不锈钢后,发生了互扩散效应,钎料与母材之间形成了牢固的扩散层;在Ni-Mn-Si-Cu-B-Ce钎料显微组织中,主要存在Ni基固溶体（溶解有微量的Cu）以及Cu_9Si、Mn Si、Mn_6Ni_16Si_7等化合物相。
The Ni-Mn-Si-Cu-B-Ce filler metal was researched in order to satisfy the needs that the stainless steel could be jointed in the temperature of 990-1010 ℃. The melting characteristics,wettability, joint structure and shear strength of the joint were tested. The results show that the melting temperature of BNi66MnSiCu filler metal can be dropped with the trace elements B and Ce added, thus the needs that the stainless steel can be jointed in the temperature of 990-1010 ℃ are satisfied. The trace elements B and Ce have few effect on the wettability of 1Crl8Ni9Ti stainless steel for the filler metal, but the shear strength of the filler metal is raised by 1.3 times. The diffusion reaction occurrs when 1Cr18Ni9Ti stainless steel is brazied with Ni-Mn-Si-Cu-B-Ce filler metal, and the strong diffusion layer is formed between the stainless steel and the filler metal. The microstructure of Ni-Mn-Si-Cu-B-Ce filler metal is composed of nickel-based solid solution （trace element Cu dissolved）, Cu_9Si phase, MnSi phase, and Mn_6Ni_16Si_7 compound phases.
出处
《热加工工艺》
CSCD
北大核心
2016年第13期226-228,共3页
Hot Working Technology
