Effect of mechanical alloying and sintering process on microstructure and mechanical properties of Al-Ni-Y-Co-La alloy

2014 ◽  
Vol 24 (7) ◽  
pp. 2251-2257 ◽  
Author(s):  
Yan-bo YUAN ◽  
Zhi-wei WANG ◽  
Rui-xiao ZHENG ◽  
Xiao-ning HAO ◽  
Kei AMEYAMA ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Mechanical Alloying ◽  
Sintering Process ◽  
Microstructure And Mechanical Properties

Nanoindentation Characterization of Mechanically Alloyed Fe-Al-Si Powders

2018 ◽  
Vol 784 ◽  
pp. 15-20 ◽  
Author(s):  
Petr Haušild ◽  
Jaroslav Čech ◽  
Miroslav Karlík ◽  
Filip Průša ◽  
Pavel Novák ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Mechanical Alloying ◽  
Preparation Technique ◽  
X Ray Diffraction ◽  
Mechanically Alloyed ◽  
Microstructure And Mechanical Properties ◽  
Plasma Sintering ◽  
Special Sample Preparation ◽  
Spark Plasma ◽  
Powder Particles

The effect of processing conditions on microstructure and mechanical properties of Fe-Al-Si powders was studied by means of scanning electron microscopy, X-ray diffraction and nanoindentation. Fe-Al-Si alloy powder was prepared from pure elemental powders by mechanical alloying. Microstructure and mechanical properties of powders were characterized after various durations of mechanical alloying. Special sample preparation technique was developed allowing to characterize the properties of individual powder particles after each step of processing in a planetary ball mill. This step-by-step characterization allowed to find the optimum conditions for subsequent spark plasma sintering.

scholarly journals Mechanical Properties and Microstructure of W-6Ni-4Co Alloy by a Two-Step Sintering Process

Metals ◽  
2019 ◽  
Vol 9 (6) ◽  
pp. 680 ◽  
Author(s):  
Hongfeng Dong ◽  
Peiyou Li ◽  
Taotao Ai ◽  
Wenhu Li
Keyword(s):  
Mechanical Properties ◽  
Mechanical Alloying ◽  
Solid Phase ◽  
Particle Sizes ◽  
Sintering Process ◽  
Dwelling Time ◽  
Milled Powders

The mechanical properties and microstructure of W-6Ni-4Co alloy through solid phase sintering and two-step sintering process were investigated. The results demonstrated that the particle sizes of W-6Ni-4Co alloy milled powders increased firstly and decreased later during a mechanical alloying process. The shape of alloy milled powders affected that of grains in alloy by solid phase sintering. The shape of W-rich particles in the alloys changed from stripes to network, to polygonal and to subsphaeroidal finally during two-step sintering process. The mechanical properties could be attributed to the densification and microstructure of alloys, and increased during two-step sintering with short dwelling time.

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