scholarly journals Properties of pure magnesium produced using mechanical milling and spark-plasma sintering

2019 ◽  
Vol 69 (4) ◽  
pp. 242-248
Author(s):  
Masahiro Kubota ◽  
Toshiki Hagino
2022 ◽  
pp. 131671
Author(s):  
Dina V. Dudina ◽  
Tatyana F. Grigoreva ◽  
Vyacheslav I. Kvashnin ◽  
Evgeniya T. Devyatkina ◽  
Sergey V. Vosmerikov ◽  
...  

Materials ◽  
2018 ◽  
Vol 11 (8) ◽  
pp. 1323 ◽  
Author(s):  
Yanlin Pan ◽  
Daoping Xiang ◽  
Ning Wang ◽  
Hui Li ◽  
Zhishuai Fan

Fine-grained W-6Ni-4Mn alloys were fabricated by spark plasma sintering (SPS) using mechanical milling W, Ni and Mn composite powders. The relative density of W-6Ni-4Mn alloy increases from 71.56% to 99.60% when it is sintered at a low temperature range of 1000–1200 °C for 3 min. The spark plasma sintering process of the alloy can be divided into three stages, which clarify the densification process of powder compacts. As the sintering temperature increases, the average W grain size increases but remains at less than 7 µm and the distribution of the binding phase is uniform. Transmission electron microscopy (TEM) observation reveals that the W-6Ni-4Mn alloy consists of the tungsten phase and the γ-(Ni, Mn, W) binding phase. As the sintering temperature increases, the Rockwell hardness and bending strength of alloys initially increases and then decreases. The optimum comprehensive hardness and bending strength of the alloy are obtained at 1150 °C. The main fracture mode of the alloys is W/W interface fracture.


2019 ◽  
Vol 30 (11) ◽  
pp. 2649-2658 ◽  
Author(s):  
Ruifeng Liu ◽  
Wenxian Wang ◽  
Hongsheng Chen ◽  
Zhen Lu ◽  
Wei Zhao ◽  
...  

Metals ◽  
2017 ◽  
Vol 7 (4) ◽  
pp. 117 ◽  
Author(s):  
Nguyen Thi Hoang Oanh ◽  
Nguyen Hoang Viet ◽  
Ji-Soon Kim ◽  
Alberto Moreira Jorge Junior

2008 ◽  
Vol 43 (10) ◽  
pp. 3569-3576 ◽  
Author(s):  
Dina V. Dudina ◽  
Dustin M. Hulbert ◽  
Dongtao Jiang ◽  
Cosan Unuvar ◽  
Sheldon J. Cytron ◽  
...  

2021 ◽  
Vol 21 (4) ◽  
pp. 2687-2691
Author(s):  
Nguyen Thi ◽  
Hoang Oanh ◽  
Nguyen Hoang Viet

The present work is focused on the fabrication and the investigation of microstructures of copperbased TiC nanocomposites produced by mechanical milling in a high energy planetary ball mill. TiH2, carbon and copper powders were used as starting materials in which In-Situ reaction between carbon and TiH2 occurs to form TiC nanoparticles. The mixture powders of Cu–TiH2–C were milled for 12 h at 450 rpm in Argon gas. Annealing treatment process at 950 °C for 2 h was applied for as-milled composite powders to enhance In-Situ reaction. The consolidation of composite powders was conducted by spark plasma sintering under uniaxial pressing of 70 MPa. Sintering procedure was done at 950 and 1000 °C for 5 min. The results indicated that as TiC nanoparticles are formed after sintering at 950 °C and the TiC particles are increased up at higher sintering temperature of 1000 °C. Fracture surface of sintered samples shows ductile mode. HR-TEM image showed the crystal size of copper was about 10 nm for sample sintered at 1000 °C. The hardness and relative density of the nanocomposites increase when increasing sintering temperature.


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