scholarly journals The Effect of Equal-Channel Angular Pressing on the Surface Quality of Aluminum Alloy 7075 after Milling

2018 ◽  
Vol 20 (4) ◽  
pp. 96-106
Author(s):  
Andrey Filippov ◽  
◽  
Sergei Tarasov ◽  
Oleg Podgornykh ◽  
Nikolay Shamarin ◽  
...  
Keyword(s):  
Aluminum Alloy ◽  
Surface Quality ◽  
Equal Channel Angular Pressing ◽  
Angular Pressing ◽  
Aluminum Alloy 7075

Influence of aging on mechanical properties of equal channel angular pressed aluminum alloy 7075

2015 ◽  
Vol 231 (10) ◽  
pp. 1803-1811 ◽  
Author(s):  
Seyed Mahmoud Ghalehbandi ◽  
Alireza Fallahi Arezoodar ◽  
Hossein Hosseini-Toudeshky
Keyword(s):  
Mechanical Properties ◽  
Aluminum Alloy ◽  
Equal Channel Angular Pressing ◽  
Room Temperature ◽  
Solution Treatment ◽  
Aging Treatment ◽  
Subsequent Aging ◽  
Good Ductility ◽  
Angular Pressing ◽  
Aluminum Alloy 7075

Effect of aging treatment on mechanical properties of an age-hardenable aluminum alloy after equal channel angular pressing at room temperature has been investigated using hardness, stress–strain behavior and surface fractography. Aluminum alloy 7075 was pressed after solution treatment. Yield stress, ultimate stress and hardness of pressed samples have increased significantly compared with those of coarse grain, but the elongation to failure has decreased. Also the pressed specimens were subjected to aging treatment at room temperature and temperatures of 80 °C, 100 °C, 120 °C and 140 °C to obtain the optimized strength and ductility. The results indicated that post–equal channel angular pressing aging at 80 °C has resulted in the maximum strength, and natural aging has resulted in good ductility and acceptable strength. It confirmed the fact that there is a potential in obtaining high strength and good ductility in age-hardenable alloys employing severe plastic deformation and subsequent aging.

scholarly journals The influence of changing the parameters of water-abrasive cutting on the quality of cutting composite cross-section structures

Mechanik ◽  
2018 ◽  
Vol 91 (7) ◽  
pp. 476-478
Author(s):  
Elżbieta Doluk ◽  
Józef Kuczmaszewski ◽  
Paweł Pieśko
Keyword(s):  
Aluminum Alloy ◽  
Surface Quality ◽  
Cross Section ◽  
Water Mass ◽  
Abrasive Water Jet ◽  
Flow Rates ◽  
Composite Layers ◽  
Mass Flow Rates ◽  
Abrasive Cutting

Presented are results of the surface quality sandwich composites (aluminum alloy EN AW-2024 and CFRP) by using an abrasive water-jet. The experiments were conducted with different speed of cutting, pressure of the abrasive water, mass flow rates, entry side of the stream and quantity of composite layers. The analysis has been studied based on received bevel angle values.

scholarly journals Effect of powder lubricants on surface quality of aluminum alloy die-castings.

2002 ◽  
Vol 52 (7) ◽  
pp. 303-307 ◽  
Author(s):  
Hitoshi YAE ◽  
Ryosuke KIMURA ◽  
Makoto YOSIDA ◽  
Gen SASAKI ◽  
Jin PAN ◽  
...  
Keyword(s):  
Aluminum Alloy ◽  
Surface Quality ◽  
Die Castings

Investigation of the Effects of Technological Parameters on Surface Roughness in Extrusion Bars of Aluminum Alloy

2019 ◽  
Vol 889 ◽  
pp. 155-160
Author(s):  
Trong Mai Nguyen ◽  
Đuc Quy Tran ◽  
Van Nghe Pham ◽  
Van Canh Nguyen
Keyword(s):  
Surface Roughness ◽  
Aluminum Alloy ◽  
Surface Quality ◽  
Research Work ◽  
Extrusion Process ◽  
Optimal Parameters ◽  
Technological Parameters

In this research work, the result of the effects of technological parameters on surface roughness in extrusion bars of aluminum alloy were pesented. The results of this study may be used for choosing optimal parameters of extrusion process so that surface quality of extruded bar was improved.

Microstructural Characterization of an Al-Mg-Si Aluminum Alloy Processed by Equal Channel Angular Pressing

2013 ◽  
Vol 745-746 ◽  
pp. 303-308
Author(s):  
Zhen Zhang ◽  
Man Ping Liu ◽  
Ying Da Yu ◽  
Pål C. Skaret ◽  
Hans Jørgen Roven
Keyword(s):  
Aluminum Alloy ◽  
Electron Microscope ◽  
High Resolution ◽  
Dislocation Density ◽  
Equal Channel Angular Pressing ◽  
Transmission Electron Microscope ◽  
Microstructural Characterization ◽  
Dark Field ◽  
Angular Pressing ◽  
Transmission Electron

In the present work, a peak-aged 6061 Al-Mg-Si aluminum alloy was subjected to equal channel angular pressing (ECAP) at 110 °C. The microstructure of the sample was characterized by high-resolution transmission electron microscope and weak-beam dark-field method. It was shown that the dislocation density in some local areas is much lower than the average dislocation density expected in the usual alloys processed by severe plastic deformation. High-resolution transmission electron microscope observations indicated that many full dislocations were dissociated into partial dislocations connected by stacking faults. In addition, a Z-shaped defect (i.e., a type of dislocation locks) probably formed by the reactions of the partials in different {111} planes was first observed in the ECAPed alloy. Furthermore, the precipitation behavior and sequence in the present ECAPed sample were identified by high-resolution transmission electron microscopy.

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