Microstructure evolution, B2 grain growth kinetics and fracture behaviour of a powder metallurgy Ti-22Al-25Nb alloy fabricated by spark plasma sintering

2018 ◽  
Vol 730 ◽  
pp. 106-118 ◽  
Author(s):  
Jianbo Jia ◽  
Wenchao Liu ◽  
Yan Xu ◽  
Chao Lu ◽  
Hailiang Liu ◽  
...  
Keyword(s):  
Powder Metallurgy ◽  
Grain Growth ◽  
Spark Plasma Sintering ◽  
Growth Kinetics ◽  
Microstructure Evolution ◽  
Fracture Behaviour ◽  
Plasma Sintering ◽  
Spark Plasma ◽  
Grain Growth Kinetics

Grain growth kinetics in CoCrFeNi and CoCrFeMnNi high entropy alloys processed by spark plasma sintering

2019 ◽  
Vol 791 ◽  
pp. 1114-1121 ◽  
Author(s):  
M. Vaidya ◽  
Ameey Anupam ◽  
J. Vijay Bharadwaj ◽  
Chandan Srivastava ◽  
B.S. Murty
Keyword(s):  
Grain Growth ◽  
Spark Plasma Sintering ◽  
Growth Kinetics ◽  
High Entropy Alloys ◽  
High Entropy ◽  
Plasma Sintering ◽  
Spark Plasma ◽  
Grain Growth Kinetics

Spark Plasma Sintering and Microstructural Characterization of Additive-Free Polycrystalline β-SiC

2009 ◽  
Vol 423 ◽  
pp. 67-72 ◽  
Author(s):  
A. Lara ◽  
R. Poyato ◽  
A. Muñoz ◽  
A.L. Ortiz ◽  
Arturo Domínguez-Rodríguez
Keyword(s):  
Grain Growth ◽  
Spark Plasma Sintering ◽  
Sintering Temperature ◽  
Microstructural Characterization ◽  
Holding Time ◽  
Plasma Sintering ◽  
Final Microstructure ◽  
Spark Plasma ◽  
Grain Growth Kinetics

Additive-free -SiC powders were sintered by means of Spark Plasma Sintering System. Experiments were performed in the temperature range from 1650°C to 2200°C, 3 to 10 min holding time and pressure from 50 until 150 MPa. In order to favour sinterization, the starting powder was mechanically activated: defect concentration was increased by centrifugal ball milling. Applied temperature, holding time and/or pressure were varied to analyze their effect on the densification and grain growth kinetics. The full sinterization of the material was obtained for temperatures as high as 1900°C and over. The relative density of the obtained material was high, up to 97.0  0.6 % the theoretical density for 2200°C sintering temperature. An intense grain growth took place while sintering. The final microstructure exhibited a grain size distribution range from 1.0 to 2.5 m, depending on the sintering conditions. Such grain growth strongly depends on the sintering time, not so much on the sintering temperature.

Effect of Spark Plasma Sintering on the Microstructure Evolution and Properties of M3:2 High-Speed Steel

2014 ◽  
Vol 788 ◽  
pp. 329-333
Author(s):  
Rui Zhou ◽  
Xiao Gang Diao ◽  
Jun Chen ◽  
Xiao Nan Du ◽  
Guo Ding Yuan ◽  
...  
Keyword(s):  
Powder Metallurgy ◽  
Spark Plasma Sintering ◽  
High Speed ◽  
Bending Strength ◽  
Sintering Temperature ◽  
High Speed Steel ◽  
Continuous Heating ◽  
Plasma Sintering ◽  
Spark Plasma ◽  
The Impact

Effects of sintering temperatures on the microstructure and mechanical performance of SPS M3:2 high speed steel prepared by spark plasma sintering was studied. High speed steel sintering curve of continuous heating from ambient temperature to 1200°C was estimated to analyze the sintering processes and sintering temperature range. The sintering temperature within this range was divided into groups to investigate hardness, relative density and microstructure of M3:2 high-speed steel. Strip and quadrate carbides were observed inside the equiaxed grains. SPS sintering temperature at 900°C can lead to nearly full densification with grain size smaller than 20μm. The hardness and bending strength are higher than that of the conventionally powder metallurgy fabricated ones sintered at 1270°C. However, fracture toughness of the high speed steel is lower than that of the conventional powder metallurgy steels. This can be attributed to the shape and distribution of M6C carbides which reduce the impact toughness of high speed steels.

Spark Plasma Sintering of Cryomilled Nanocrystalline Al Alloy - Part I: Microstructure Evolution

2011 ◽  
Vol 43 (1) ◽  
pp. 327-339 ◽  
Author(s):  
Yuhong Xiong ◽  
Dongming Liu ◽  
Ying Li ◽  
Baolong Zheng ◽  
Chris Haines ◽  
...  
Keyword(s):  
Spark Plasma Sintering ◽  
Microstructure Evolution ◽  
Al Alloy ◽  
Plasma Sintering ◽  
Spark Plasma ◽  
Alloy Part

scholarly journals The Effect of Spark Plasma Sintering on Microstructure Evolution in Thermoelectric Materials

2018 ◽  
Vol 24 (S1) ◽  
pp. 1494-1495
Author(s):  
Xiaomi Zhang ◽  
Zhong-Zhen Luo ◽  
Sumanta Sarkar ◽  
Mercouri G. Kanatzidis ◽  
Vinayak P. Dravid
Keyword(s):  
Spark Plasma Sintering ◽  
Microstructure Evolution ◽  
Thermoelectric Materials ◽  
Plasma Sintering ◽  
Spark Plasma
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