Formation mechanism and stability of the phase in the interface of tungsten carbide particles reinforced iron matrix composites: First principles calculations and experiments

2016 ◽  
Vol 31 (16) ◽  
pp. 2376-2383 ◽  
Author(s):  
Zulai Li ◽  
He Wei ◽  
Quan Shan ◽  
Yehua Jiang ◽  
Rong Zhou ◽  
...  
Keyword(s):  
Tungsten Carbide ◽  
Formation Mechanism ◽  
First Principles ◽  
Matrix Composites ◽  
First Principles Calculations ◽  
Iron Matrix ◽  
Image Position ◽  
Carbide Particles

Abstract

scholarly journals Dry sliding wear investigation on tungsten carbide particles reinforced iron matrix composites

2018 ◽  
Vol 5 (11) ◽  
pp. 116528 ◽  
Author(s):  
A Grairia ◽  
N E Beliardouh ◽  
M Zahzouh ◽  
C Nouveau ◽  
A Besnard
Keyword(s):  
Tungsten Carbide ◽  
Sliding Wear ◽  
Dry Sliding Wear ◽  
Dry Sliding ◽  
Matrix Composites ◽  
Iron Matrix ◽  
Carbide Particles

Microstructure and Abrasive Wear Characteristics of In Situ WC Bundles – Reinforced Iron Matrix Composites

2011 ◽  
Vol 284-286 ◽  
pp. 265-268 ◽  
Author(s):  
Li Sheng Zhong ◽  
Yun Hua Xu ◽  
Peng Yu ◽  
Xiao Jie Liu ◽  
Fang Xia Ye ◽  
...  
Keyword(s):  
Weight Loss ◽  
Tungsten Carbide ◽  
Synthesis Process ◽  
Matrix Composites ◽  
Tungsten Carbides ◽  
X Ray Diffraction ◽  
Iron Matrix ◽  
The Matrix ◽  
Carbide Particles

An in-situ synthesis process combining an infiltration casting with a subsequent heat treatment was applied to fabricate special tungsten carbide (WC) bundles-reinforced iron matrix composites in this work. The microstructure and wear-resistance of the tungsten carbide bundles reinforced iron matrix composites were studied by using scanning electron microscopy, X-ray diffraction and wear tester. Results showed that the tungsten carbide bundles distributed in the matrix with the center-to-center spacing 2.2 mm, and the diameter of each tungsten carbide bundle is about 1 mm. Most of the tungsten carbides agglomerated, but still there were tungsten carbide particles and the size of tungsten carbide particle was about 10—15 μm. The weight loss of the tungsten carbides bundle reinforced iron matrix composites increased with the increase of the loads and the weight loss of the composites is much less than those of the gray cast iron under the same condition. The wear mechanism of tungsten carbide bundles-reinforced iron matrix composites appears as: micro-cutting, micro-ploughing, broken tungsten carbide and broken particles re-embedded in the matrix.

Mechanical properties of iron matrix composites reinforced by copper-coated hybrid ceramic particles

2015 ◽  
Vol 30 (15) ◽  
pp. 2360-2368 ◽  
Author(s):  
Xinjian Cao ◽  
Jianfeng Jin ◽  
Yuebo Zhang ◽  
Bernie Yaping Zong
Keyword(s):  
Mechanical Properties ◽  
Matrix Composites ◽  
Iron Matrix ◽  
Ceramic Particles ◽  
Image Position ◽  
Hybrid Ceramic

Abstract

scholarly journals Formation mechanism of β’’-Mg5Si6 and its PFZ in an Al-Mg-Si-Mn alloy: experiment and first-principles calculations

2021 ◽  
Author(s):  
Xiaoming Qian ◽  
Yong Li ◽  
Zhaodong Wang
Keyword(s):  
Formation Mechanism ◽  
First Principles ◽  
Constitutional Supercooling ◽  
First Principles Calculations ◽  
Heating Period

Abstract Formation mechanism of β’’-Mg5Si6 and its PFZ in an Al-Mg-Si-Mn alloy was studied by the means of experiment and first-principles calculations. Results show that at 270°C during the 100 °C/h heating period, β’’-Mg5Si6 precipitated inside the dendrites, whereas precipitation free zones (PFZs) of β’’-Mg5Si6 presented near the dendrite arm regions. The formation of the β’’-Mg5Si6 and its PFZ were related to the concentration of vacancy. Low-concertation zones of vacancy formed near the eutectics during the solidification due to the constitutional supercooling, no β’’-Mg5Si6 precipitated in the low-concertation zones of vacancy due to the vacancy-dependence of β’’-Mg5Si6, the Si vacancy-containing β’’-Mg5Si6 was extremely unstable and Si vacancies prefer to stay away from distribution.

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