Low-temperature superplasticity of friction stir processed Al–Zn–Mg–Cu alloy

2008 ◽  
Vol 58 (8) ◽  
pp. 667-670 ◽  
Author(s):  
F.C. Liu ◽  
Z.Y. Ma
Keyword(s):  
Low Temperature ◽  
Friction Stir ◽  
Cu Alloy

The formation of low temperature Cu3Si in Ag(Cu)/Si structure upon annealing and its effects on adhesion and resistivity

2003 ◽  
Vol 766 ◽  
Author(s):  
Sungjin Hong ◽  
Seob Lee ◽  
Yeonkyu Ko ◽  
Jaegab Lee
Keyword(s):  
Low Temperature ◽  
Auger Electron Spectroscopy ◽  
Electron Spectroscopy ◽  
Auger Electron ◽  
Si Substrate ◽  
Copper Silicide ◽  
Alloy Films ◽  
Cu Alloy ◽  
Cu Film ◽  
Rapid Drop

AbstractThe annealing of Ag(40 at.% Cu) alloy films deposited on a Si substrate at 200 – 800 oC in vacuum has been conducted to investigate the formation of Cu3Si at the Ag-Si interface and its effects on adhesion and resistivity of Ag(Cu)/Si structure. Auger electron spectroscopy(AES) analysis showed that annealing at 200°C allowed a diffusion of Cu to the Si surface, leading to the significant reduction in Cu concentration in Ag(Cu) film and thus causing a rapid drop in resistivity. In addition, the segregated Cu to the Si surface reacts with Si, forming a continuous copper silicide at the Ag(Cu)/Si interface, which can contribute to an enhanced adhesion of Ag(Cu)/Si annealed at 200 oC. However, as the temperature increases above 300°C, the adhesion tends to decrease, which may be attributed to the agglomeration of copper silicide beginning at around 300°C.

Effect of Equal Channel Angular Pressing and Annealing on Corrosion Resistance of Al-Cu Alloy

2013 ◽  
Vol 803 ◽  
pp. 226-229
Author(s):  
Da Ran Fang ◽  
Chun Liu ◽  
Feng Fang Liu
Keyword(s):  
Corrosion Resistance ◽  
Low Temperature ◽  
Equal Channel Angular Pressing ◽  
Annealing Treatment ◽  
Coarse Grained ◽  
Nacl Solution ◽  
Angular Pressing ◽  
Cu Alloy ◽  
Low Temperature Annealing ◽  
Ultrafine Grained

Al-3.9wt.%Cu alloy was subjected to equal channel angular pressing (ECAP) and subsequent low temperature annealing treatment, and the corrosion resistance of the samples was investigated by potentiodynamic polarization measurements in 3.5% NaCl solution. The results show that the corrosion rate of the ultrafine-grained alloy increases, in comparison with the coarse-grained alloy. Meanwhile, it is noted that the corrosion resistance of the alloy subjected to ECAP can be improved by relief annealing.

Effects of friction-stir processing with water cooling on the properties of an Al–Zn–Mg–Cu Alloy

2017 ◽  
Vol 34 (2) ◽  
pp. 153-160 ◽  
Author(s):  
Yu Chen ◽  
Yifu Jiang ◽  
Hua Ding ◽  
Jingwei Zhao ◽  
Jizhong Li
Keyword(s):  
Friction Stir Processing ◽  
Water Cooling ◽  
Friction Stir ◽  
Cu Alloy

Microstructure and Mechanical Properties of a Friction Stir Processed Al-Zn-Mg-Cu Alloy

2010 ◽  
Vol 654-656 ◽  
pp. 1428-1431 ◽  
Author(s):  
Margarita Vargas ◽  
Sri Lathabai
Keyword(s):  
Mechanical Properties ◽  
Rotational Speed ◽  
High Strength ◽  
Travel Speed ◽  
Nugget Zone ◽  
Friction Stir ◽  
Complex Interactions ◽  
Cu Alloy ◽  
Microstructure And Mechanical Properties ◽  
Aa 7075

Friction stir processing (FSP) was performed on AA 7075-T6, a heat treatable high strength Al-Zn-Mg-Cu alloy. The two main FSP parameters, the tool rotational and travel speed, were varied systematically in order to understand their influence on the microstructure and mechanical properties of the processed zone. At a given rotational speed, increasing the travel speed increased the microhardness of the nugget (stir) zone; for a given travel speed there appeared to be an optimum rotational speed which resulted in the highest microhardness. The range of FSP parameters used did not significantly influence the nugget zone grain size. It is suggested that the observed mechanical properties are a result of the complex interactions between the FSP thermo-mechanical effects and the processes of dissolution, coarsening and re-precipitation of the strengthening precipitates in this alloy.

scholarly journals Investigation on friction stir welding of hybrid composites fabricated on Al–Zn–Mg–Cu alloy through friction stir processing

2019 ◽  
Vol 8 (5) ◽  
pp. 3733-3740 ◽  
Author(s):  
Namrata Gangil ◽  
Sachin Maheshwari ◽  
Arshad Noor Siddiquee ◽  
Mustufa Haider Abidi ◽  
Mohammed A. El-Meligy ◽  
...  
Keyword(s):  
Friction Stir Welding ◽  
Friction Stir Processing ◽  
Hybrid Composites ◽  
Friction Stir ◽  
Cu Alloy

Low-temperature superplastic deformation mechanism in Ti–6Al–4V alloy processed by friction stir processing

2019 ◽  
Vol 764 ◽  
pp. 138261 ◽  
Author(s):  
Wenjing Zhang ◽  
Hua Ding ◽  
Minghui Cai ◽  
Wenjing Yang ◽  
Jizhong Li
Keyword(s):  
Low Temperature ◽  
Friction Stir Processing ◽  
Deformation Mechanism ◽  
Superplastic Deformation ◽  
Friction Stir

Friction properties of PTFE, h-BN and Al-4%Cu alloy in a vacuum at super low temperature

Cryogenics ◽  
1994 ◽  
Vol 34 ◽  
pp. 493-496 ◽  
Author(s):  
Koichi Yokoi ◽  
Katsuzo Okada
Keyword(s):  
Low Temperature ◽  
Cu Alloy ◽  
Super Low Temperature
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