摘要
采用冷轧复合工艺制得高锡铝合金-钢双金属材料,分别对冷轧态和再结晶退火态双金属的结合界面进行组织观察、结合强度测试及结合机理分析。结果表明:冷轧态双金属中锡相呈带状分布,再结晶态双金属中锡相呈"孤岛状"均匀分布;双金属界面形态结合良好,冷轧态双金属的界面结合机理为冷压焊合和机械咬合,再结晶态界面结合机理为冷压焊合、机械咬合和冶金结合三种;经350℃×2h退火后,双金属结合强度达92.6 MPa,比冷轧态提高了27%。
Bimetal material of high-tin aluminum alloy and steel was compounded by cold-rolling process. The microstructure observing, bonding strength measuring and bonding mechanism analysis for the bimetal were investigated in cold-rolling and recrystallization annealing state, respectively. The experimental results indicate that tin phase in cold-rolling state shows a zonal distribution along the rolling direction, however, in recrystallization annealing state, shows uniformly distributed just like some ＂isolated islands＂. The bimetal has a good bonding interface, and the bonding mechanism of bimetal interface, in cold-rolling state, is cold pressure welding and mechanical occluding, but in recrystallization annealing state, is cold pressure welding, mechanical occluding, and metallurgic bonding. After recrystallization annealing, at 350 ℃ for 2 h, the bonding strength of bimetal approachs to 92.6 MPa, which is 27% higher than that of cold-rolling state.
出处
《热加工工艺》
CSCD
北大核心
2013年第16期101-103,共3页
Hot Working Technology
基金
广西大学有色金属材料及其加工新技术教育部重点实验室开放基金项目(GXKFJ09-02)
关键词
高锡铝合金
冷轧双金属
结合机理
high-tin aluminum alloy
cold-rolling bimetal
bonding mechanism
