Hui Wang Donghui Yang Siyuan He Deping He
材料科学技术（英）
The open-cell Al foam core sandwiches (AFCSs) were successfully fabricated by using a specially designed Zn-Al-Cu based filler alloy via vibration aided liquid phase bonding method. The effects of the vibration on the bonding seam were investigated and the bonding strength between Al foam core and solid Al alloy face sheet was tested by shearing tests. The results show that vibration can significantly improve the quality of the bonding and the shearing strength of the bonding seam, which implies that this joining method has a good potential in practical applications.
关键词:
Open-cell Al foam core sandwich
,
Liquid phase bonding
,
Vibration
,
Fabrication
,
Mechanical property
Hui Wang Donghui Yang Siyuan He Deping He
材料科学技术（英）
The open-cell Al foam core sandwiches (AFCSs) were successfully fabricated by using a specially designed Zn-Al-Cu based filler alloy via vibration aided liquid phase bonding method. The effects of the vibration on the bonding seam were investigated and the bonding strength between Al foam core and solid Al alloy face sheet was tested by shearing tests. The results show that vibration can significantly improve the quality of the bonding and the shearing strength of the bonding seam, which implies that this joining method has a good potential in practical applications.
关键词:
Open-cell Al foam core sandwich
,
Liquid phase bonding
,
Vibration
,
Fabrication
,
Mechanical property
Hui Zhang Shaoqing Wang
材料科学技术（英）
The structural stability of the intermetallics AlTi3, Al2Ti, Al3Ti4 and Al3Ti in the Al-Ti system has been investigated using density functional theory (DFT) and density functional perturbation theory (DFPT). The calculated ground-state convex hull is in agreement with the experimental researches. Al3Ti4 (hP7) is metastable at 0 K and may be stabilized as the temperature increases due to the effects of the vibration entropy. For Al2Ti, r-Al2Ti is stable at 0 K and h-Al2Ti is stabilized by the vibration entropy at high temperatures. Al3Ti (tI16) is unstable considering vibration effects and Al3Ti (tI8) is the most stable structure at 0 K.
关键词:
First-principles
,
Al-Ti
,
振动
,
晶体结构
