scholarly journals Phase transformation under thermal fatigue of high Mn-TWIP steel: Microstructure and mechanical properties

2016 ◽  
Vol 677 ◽  
pp. 431-437 ◽  
Author(s):  
J.J. Roa ◽  
H. Besharatloo ◽  
G. Fargas ◽  
J. Calvo ◽  
A. Mateo
Keyword(s):  
Mechanical Properties ◽  
Phase Transformation ◽  
Thermal Fatigue ◽  
Twip Steel ◽  
Steel Microstructure ◽  
Microstructure And Mechanical Properties

Phase transformation, microstructure and mechanical properties of Si3N4/SiC composite

2001 ◽  
Vol 21 (12) ◽  
pp. 2179-2183 ◽  
Author(s):  
Jian-Feng Yang ◽  
Tatsuki Ohji ◽  
Tohru Sekino ◽  
Chun-Liang Li ◽  
Koichi Niihara
Keyword(s):  
Mechanical Properties ◽  
Phase Transformation ◽  
Microstructure And Mechanical Properties

Effects of Sintering Additives on the Microstructure and Mechanical Properties of Silicon Nitride Ceramics by GPS

2010 ◽  
Vol 105-106 ◽  
pp. 27-30 ◽  
Author(s):  
Wei Ru Zhang ◽  
Feng Sun ◽  
Ting Yan Tian ◽  
Xiang Hong Teng ◽  
Min Chao Ru ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Fracture Toughness ◽  
Phase Transformation ◽  
Silicon Nitride ◽  
Porous Silicon ◽  
Flexural Strength ◽  
Relative Density ◽  
Sintering Additives ◽  
Microstructure And Mechanical Properties ◽  
Nitride Ceramics

Silicon nitride ceramics were prepared by gas pressure sintering (GPS) with different sintering additives, including La2O3, Sm2O3 and Al2O3. Effect of sintering additives on the phase-transformation, microstructure and mechanical properties of porous silicon nitride ceramics was investigated. The results show that the reaction of sintering additives each other and with SiO2 had key effects on the phase-transformation, grain growing and grain boundaries. With 9MPa N2 atmosphere pressure, holding 1h at 1850°C, adding 10wt% one of the La2O3, Sm2O3, Al2O3, porous silicon nitride was prepared and the relative density was 78%, 72%, 85% respectively. The flexural strength was less than 500MPa, and the fracture toughness was less than 4.8MPam1/2. Dropping compounds sintering additives, such as La2O3+Al2O3, Sm2O3+Al2O3 effectively improves the sintering and mechanical properties. The relative density was 99.2% and 98.7% with 10wt% compounds sintering additives. The grain ratio of length to diameter was up to 1:8. The flexural strength was more than 900MPa, and the fracture toughness was more than 8.9MPam1/2.

Influences of Nb-microalloying on microstructure and mechanical properties of Fe–25Mn–3Si–3Al TWIP steel

2015 ◽  
Vol 84 ◽  
pp. 238-244 ◽  
Author(s):  
Dejun Li ◽  
Yaorong Feng ◽  
Shengyin Song ◽  
Qiang Liu ◽  
Qiang Bai ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Twip Steel ◽  
Microstructure And Mechanical Properties ◽  
Nb Microalloying
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