Dislocation Behavior in ZrC Particles during Elevated Temperature Compressive Deformation of a 30 vol.% ZrCp/W Composite

J Mater Sci Technol ›› 2011, Vol. 27 ›› Issue (6): 553-558.

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Dislocation Behavior in ZrC Particles during Elevated Temperature Compressive Deformation of a 30 vol.% ZrC_p/W Composite

Taiquan Zhang^1,2), Qingchang Meng¹⁾, Yujin Wang¹⁾, Yu Zhou¹⁾, Guiming Song^1,3)

1) Institute for Advanced Ceramics, Harbin Institute of Technology, Harbin 150001, China
2) China National R&D Center for Tungsten Technology, Xiamen 361009, China
3) Department of Materials Science and Engineering, Delft University of Technology, Mekelweg 2, 2628CD Delft, the Netherlands

Received:2010-03-01 Revised:2010-08-15 Online:2011-06-28 Published:2011-06-22
Contact: Y.J. Wang
Supported by:
National Natural Science Foundation of China (No. 50101003) and the Scholastic Foundation in Harbin Institute of Technology (No. HIT. 2003. 07)

Abstract

Abstract: A 30 vol.% ZrC_p/W composite has been deformed in compression in the temperature range of 1200-1600°C. Dislocation nucleation mechanism in ZrC particles is discussed by analyzing the harmonious deformation between tungsten-matrix and ZrC particles. Thermal activation apparently increases the mobility of screw segments, resulting in the formation of many kinetics jogs and thermodynamics jogs above 1300°C. The formation mechanisms of the dislocation configurations are studied.

Key words: ZrC_p/W composite, ZrC particle, Compressive deformation, Dislocation microstructure

Taiquan Zhang, Qingchang Meng, Yujin Wang, Yu Zhou, Guiming Song. Dislocation Behavior in ZrC Particles during Elevated Temperature Compressive Deformation of a 30 vol.% ZrC_p/W Composite[J]. J Mater Sci Technol, 2011, 27(6): 553-558.

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Dislocation Behavior in ZrC Particles during Elevated Temperature Compressive Deformation of a 30 vol.% ZrC_p/W Composite

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