摘要
提出以铜箔为中间层材料,采用冷拔-液固相扩散复合的方法生产碳钢/不锈钢管的新工艺。通过扫描电镜、能谱分析、显微硬度试验、剪切试验等方法研究了扩散温度与时间对碳钢/不锈钢扩散复合结合区组织、成分和强度的影响。研究结果表明,以铜箔作中间层,采用冷拔-液固相扩散复合可实现碳钢与不锈钢的冶金结合;结合区发生了原子的互扩散,在碳钢/铜界面有连续的富铁相生成,且富铁相向中间层中生长。在一定温度和时间范围内,随着扩散温度和时间的增加结合区岛状组织分布量增多,使结合区硬度和强度提高。
By the process of cold-drawn and liquid-soild diffusion bonding, the cladding tube of low-carbon steel/stainless steel was prepared using Cu foil as intermediate materials.The effect of diffusion temperature and time on the mierostructure, component and bonding strength of the diffusion bonding zone of low carbon steel/stainless steel were examined by SEM, EDX analysis, microhardness test and compression shear strength test. The results show that the metallurgical bond of low-carbon steel and stainless steel can be achieved by the process of cold-drawn and liquid-soild diffusion bonding; The element diffusion is observed in bonding zone and continuous island-form iron-rich phase was formed at carbon/brass interface and then growe to copper matrix. Within a certain range of temperature and time, island-form iron-rich phase and hardness and strength of the bonding zone increase with the increase of diffusion temperature and time.
出处
《热加工工艺》
CSCD
北大核心
2009年第3期95-98,共4页
Hot Working Technology
关键词
碳钢/不锈钢
液固相扩散复合
铜
抗剪强度
carbon steel/stainless steel
liquid-soild diffusion bonding
copper
shearing strength
