Hot Extrusion of Nanostructured Al-Powder Alloys: Grain Growth Control and the Effect of Process Parameters on Their Microstructure and Mechanical Properties

2009 ◽  
Vol 40 (13) ◽  
Author(s):  
A.M. Jorge ◽  
M.M. Peres ◽  
J.B. Fogagnolo ◽  
C.S. Kiminami ◽  
C. Bolfarini ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Grain Growth ◽  
Process Parameters ◽  
Growth Control ◽  
Hot Extrusion ◽  
Powder Alloys ◽  
Microstructure And Mechanical Properties ◽  
Al Powder

scholarly journals Microstructure and Mechanical Properties of Al2024 Alloy Modified with Mg and Zn Additions after Hot-Extrusion and Aging Processes

2016 ◽  
Vol 22 (S3) ◽  
pp. 1990-1991
Author(s):  
C.G. Garay-Reyes ◽  
M. A. Ruiz-Esparza-Rodríguez ◽  
E. Cuadros-Lugo ◽  
H. M. Medrano-Prieto ◽  
I. Estrada-Guel ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Hot Extrusion ◽  
Microstructure And Mechanical Properties ◽  
Al2024 Alloy

scholarly journals Study on Microstructure and Mechanical Properties of WC-10Ni3Al Cemented Carbide Prepared by Different Ball-Milling Suspension

Materials ◽  
2019 ◽  
Vol 12 (14) ◽  
pp. 2224 ◽  
Author(s):  
Minai Zhang ◽  
Zhun Cheng ◽  
Jingmao Li ◽  
Shengguan Qu ◽  
Xiaoqiang Li
Keyword(s):  
Mechanical Properties ◽  
Fracture Toughness ◽  
Ball Milling ◽  
Grain Growth ◽  
Organic Solvents ◽  
Crack Deflection ◽  
Cemented Carbides ◽  
Powder Metallurgy Method ◽  
Microstructure And Mechanical Properties ◽  
Α Al2o3

In this paper, WC-10Ni3Al cemented carbides were prepared by the powder metallurgy method, and the effects of ball-milling powders with two different organic solvents on the microstructure and mechanical properties of cemented carbides were studied. We show that the oxygen in the organic solvent can be absorbed into the mixed powders by ball-milling when ethanol (CH3CH2OH) is used as a ball-milling suspension. This oxygen leads to the formation of α-Al2O3 during sintering, which improves the fracture toughness, due to crack deflection and bridging, while the formation of η-phase (Ni3W3C) inhibits the grain growth and increases the hardness. Alternatively, samples milled using cyclohexane (C6H12) showed grain growth during processing, which led to a decrease in hardness. Therefore, the increase of oxygen content from using organic solvents during milling improves the properties of WC-Ni3Al composites. The growth of WC grains can be inhibited and the hardness can be improved without loss of toughness by self-generating α-Al2O3 and η-phase (Ni3W3C).

Short austenitization treatment with subsequent press hardening: Correlation between process parameters, microstructure and mechanical properties

2019 ◽  
Vol 749 ◽  
pp. 176-195 ◽  
Author(s):  
Olexandr Grydin ◽  
Anatolii Andreiev ◽  
Martin Joachim Holzweißig ◽  
Christian Johannes Rüsing ◽  
Kristina Duschik ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Process Parameters ◽  
Press Hardening ◽  
Microstructure And Mechanical Properties
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