scholarly journals The Effect of Grain Size and Deformation Sub-structure on Mechanical Properties of Polycrystalline Copper and Cu–Al Alloys

1975 ◽  
Vol 16 (9) ◽  
pp. 569-579 ◽  
Author(s):  
Teizo Tabata ◽  
Kazumasa Takagi ◽  
Hiroshi Fujita
Keyword(s):  
Mechanical Properties ◽  
Grain Size ◽  
Al Alloys ◽  
Polycrystalline Copper

scholarly journals Influence of thermomechanical processing on the grain size, texture and mechanical properties of Mg-Al alloys

2012 ◽  
Vol 50 (01) ◽  
pp. 1-23
Author(s):  
B. SRINIVASARAO ◽  
J. A. DEL ◽  
O. A. RUANO ◽  
M. T. PÉREZ-PRADO
Keyword(s):  
Mechanical Properties ◽  
Grain Size ◽  
Thermomechanical Processing ◽  
Al Alloys

Novel Grain Refiner for Hypo- and Hyper-Eutectic Al-Si Alloys

2011 ◽  
Vol 690 ◽  
pp. 49-52 ◽  
Author(s):  
Magdalena Nowak ◽  
Nadendla Hari Babu
Keyword(s):  
Mechanical Properties ◽  
Grain Size ◽  
Al Alloys ◽  
Grain Structure ◽  
Grain Refiner ◽  
Silicon Alloys ◽  
Fine Grain ◽  
Cooling Conditions ◽  
Wide Range ◽  
Master Alloys

A novel effective grain refiner for hypo and hyper-eutectic Aluminium-Silicon alloys has been developed. The composition of the grain refiner has been optimized to produce a fine grain structure and finer eutectic. Effectiveness of grain size under various cooling conditions has also been investigated to simulate various practical casting conditions. For comparative purposes, a wide range of Al alloys have been produced with the addition of commercially available Al-5Ti-B master alloys. The results show that the addition of novel grain refiner reduces the grain size significantly. As a result of fine grains, the porosity in the solidified alloys is remarkably lower. A notable improvement in mechanical properties has also been observed.

Effects of Mg Content on Electric and Mechanical Properties of Al–Zn–Cu Based Alloys

2021 ◽  
Vol 21 (3) ◽  
pp. 2015-2018
Author(s):  
Yong-Ho Kim ◽  
Hyo-Sang Yoo ◽  
Kyu-Seok Lee ◽  
Sung-Ho Lee ◽  
Hyeon-Taek Son
Keyword(s):  
Mechanical Properties ◽  
Electrical Conductivity ◽  
Grain Size ◽  
Tensile Strength ◽  
Ultimate Tensile Strength ◽  
Al Alloys ◽  
Lattice Constants ◽  
Cu Alloy ◽  
Average Grain Size ◽  
Mg Content

Microstructure and properties of Al–2 wt.%Zn–1 wt.%Cu–xMg (x = 0.1, 0.3, 0.5, 0.7 wt.%) alloy extrusion materials were investigated. The lattice constants for the (311) plane increased to 4.046858, 4.048483, 4.050114 and 4.051149 Å with the addition of 0.1, 0.3, 0.5, and 0.7 wt.% of elemental Mg. The average grain size of the as-extruded Al alloys was found to be 328.7, 297.7, 187.0 and 159.3 μm for the alloys with 0.1, 0.3, 0.5, and 0.7 wt.% Mg content, respectively. The changes in the electrical conductivity by the addition of elemental Mg in Al–2 wt.%Zn–1 wt.%Cu alloy was determined, and it was found that for the addition of 0.1, 0.3, 0.5, and 0.7 wt.% Mg, the conductivity decreased to 51.62, 49.74, 48.26 and 46.80 %IACS. The ultimate tensile strength of Al–2 wt.%Zn–1 wt.%Cu–0.7 wt.%Mg alloy extrusion was increased to 203.55 MPa. Thus, this study demonstrated the correlation between the electrical conductivity and strength for the Al–2 wt.%Zn–1 wt.%Cu–xMg alloys.

Effects of temperature and grain size on deformation of polycrystalline copper–graphene nanolayered composites

2020 ◽  
Vol 22 (8) ◽  
pp. 4741-4748 ◽  
Author(s):  
Yunlong Ma ◽  
Sen Zhang ◽  
Yunfei Xu ◽  
Xiaoyi Liu ◽  
Sheng-Nian Luo
Keyword(s):  
Mechanical Properties ◽  
Molecular Dynamics ◽  
Grain Size ◽  
Molecular Dynamics Simulations ◽  
Polycrystalline Copper ◽  
Mechanical Models ◽  
Effects Of Temperature ◽  
Dynamics Simulations

The effects of temperature and grain size on mechanical properties of polycrystalline copper–graphene nanolayered (PCuGNL) composites are investigated by analytical mechanical models and molecular dynamics simulations.

First-principles calculations for understanding the microstructures and mechanical properties of co-sputtered Al alloys

Nanoscale ◽  
2021 ◽  
Author(s):  
Mingyu Gong ◽  
Wenqian Wu ◽  
Dongyue Xie ◽  
Nicholas A Richter ◽  
Qiang Li ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Grain Size ◽  
First Principles ◽  
Experimental Studies ◽  
Al Alloys ◽  
First Principles Calculations ◽  
Planar Defects ◽  
Microstructures And Mechanical Properties ◽  
Columnar Grain ◽  
The Stability

Recent experimental studies show that co-sputtering solutes with Al together can refine columnar grain size around few tens nanometers and promote formation and enhance the stability of planar defects such...

scholarly journals Effects of temperature and repeat layer spacing on mechanical properties of graphene/polycrystalline copper nanolaminated composites under shear loading

2021 ◽  
Vol 12 ◽  
pp. 863-877
Author(s):  
Chia-Wei Huang ◽  
Man-Ping Chang ◽  
Te-Hua Fang
Keyword(s):  
Mechanical Properties ◽  
Grain Size ◽  
Shear Stress ◽  
Shear Modulus ◽  
Maximum Shear Stress ◽  
Shear Loading ◽  
Polycrystalline Copper ◽  
Self Healing ◽  
Layer Spacing ◽  
Armchair Direction

In the present study, the characteristics of graphene/polycrystalline copper nanolaminated (GPCuNL) composites under shear loading are investigated by molecular dynamics simulations. The effects of different temperatures, graphene chirality, repeat layer spacing, and grain size on the mechanical properties, such as failure mechanism, dislocation, and shear modulus, are observed. The results indicate that as the temperature increases, the content of Shockley dislocations will increase and the maximum shear stress of the zigzag and armchair directions also decreases. The mechanical strength of the zigzag direction is more dependent on the temperature than that of the armchair direction. Moreover, self-healing occurs in the armchair direction, which causes the shear stress to increase after failure. Furthermore, the maximum shear stress and the shear strength of the composites decrease with an increase of the repeat layer spacing. Also, the shear modulus increases by increasing the grain size of copper.

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