Diffusivity of Al and Fe near the diffusion bonding interface of Fe3Al with low carbon steel

Bulletin of materials science

Li Yajiang¹  Ma Haijun²  Yin Yansheng²  Wang Juan² 

[1] Key Lab of Liquid Structure and Heredity of Materials, Ministry of Education, Shandong University, Jinan 250061, China$$National Key Lab of Advanced Welding Technology, Harbin Institute of Technology, Harbin 150001, China$$Key Lab of Liquid Structure and Heredity of Materials, Ministry of Education, Shandong University, Jinan 250061, ChinaKey Lab of Liquid Structure and Heredity of Materials, Ministry of Education, Shandong University, Jinan 250061, China$$National Key Lab of Advanced Welding Technology, Harbin Institute of Technology, Harbin 150001, China$$National Key Lab of Advanced Welding Technology, Harbin Institute of Technology, Harbin 150001, ChinaKey Lab of Liquid Structure and Heredity of Materials, Ministry of Education, Shandong University, Jinan 250061, China$$National Key Lab of Advanced Welding Technology, Harbin Institute of Technology, Harbin 150001, China$$;National Key Lab of Advanced Welding Technology, Harbin Institute of Technology, Harbin 150001, China$$National Key Lab of Advanced Welding Technology, Harbin Institute of Technology, Harbin 150001, ChinaNational Key Lab of Advanced Welding Technology, Harbin Institute of Technology, Harbin 150001, China$$

关键词: Fe3Al;    intermetallic;    diffusion bonding;    interface;    diffusion.;   

DOI  :  

学科分类：材料工程

来源: Indian Academy of Sciences

【 摘 要 】

The distribution of elements near the Fe₃Al/Q235 diffusion bonding interface was computed by the diffusion equation as well as measured by means of EPMA. The results indicated close agreement between the two for iron and aluminium. Diffusion coefficient in the interface transition zone is larger than that in the Fe₃Al and Q235 steel at the same temperature, which is favourable to elemental diffusion. The diffusion distance near the Fe₃Al/Q235 interface increased with increasing heating temperature, ð‘�??, and the holding time, ð‘�?. The relation between the width of the interface transition zone, ð‘�?, and the holding time, ð‘�?, conformed to parabolic growth law: ð‘�?² = 4.8 Ã�? 10⁴ exp(â€�?? 133/RT) (ð‘�? â€�?? ð‘�?₀). The width of the interface transition zone does not increase significantly for holding times beyond 60 min.

【 授权许可】

Unknown