Microstructure and Mechanical Properties of ZrO2(3Y)/Fe3Al Composites

Journal of Inorganic Materials

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Microstructure and Mechanical Properties of ZrO₂(3Y)/Fe₃Al Composites

LI Jia^1,2; YIN Yan-Sheng¹; TAN Xun-Yan¹

1. Key Lab for Liquid Structure and Heredity of Ministry of Education; Engineering Ceramics Key Lab; of Shandong Province; Shandong University; Jinan 250061; China; 2. Dept.of Material Science and; Engineering; Jinan University; Jinan 250022; China

Received:2002-11-18 Revised:2003-01-16 Published:2004-01-20 Online:2004-01-20

Abstract

Abstract: ZrO₂(3Y)/Fe₃ Al composites were synthesized by HP sintering.The results show that their room flexural strength,fracture toughness and hardness(HRA)measured are 1321MPa, 36MPa·m^1/2 and 86.7 respectively,and their critical temperature difierence(ΔT)of thermal shock elevates from 250℃ of ZrO₂(3Y)to 500℃.The elevation of fracture toughness results from the compatible effect of crack bridge,crack deflection,stress-induced transformation toughening and the disturbing of dislocation on crack spread.

Key words: zirconia, iron aluminides intermetallic, toughening, thermal shock resistance

CLC Number:

TQ174

LI Jia,YIN Yan-Sheng,TAN Xun-Yan. Microstructure and Mechanical Properties of ZrO₂(3Y)/Fe₃Al Composites[J]. Journal of Inorganic Materials.

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Microstructure and Mechanical Properties of ZrO₂(3Y)/Fe₃Al Composites

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