Ti₃SiC₂–(Ti₃SiC₂–SiC) functionally graded materials by spark plasma sintering reactive synthesis method Part 1 – gradient optimizations

W. JiangState Key Laboratory for Modification of Chemical Fibers and Polymer Materials Donghua University, Shanghai 201620, China, Engineering Research Center of Advanced Glasses Manufacturing Technology, MOE, Donghua University, Shanghai 201620, China

J. F. ZhangInstitute for Materials Research Tohoku University, Sendai 980 8577, Japan;, Email: [email protected]

L. J. WangState Key Laboratory for Modification of Chemical Fibers and Polymer Materials Donghua University, Shanghai 201620, China, Engineering Research Center of Advanced Glasses Manufacturing Technology, MOE, Donghua University, Shanghai 201620, China

R. TuInstitute for Materials Research Tohoku University, Sendai 980 8577, Japan

X. Q. YangDepartment of Engineering Structure and Mechanics Wuhan University of Technology, Wuhan 430070, China

G. ChenDepartment of Engineering Structure and Mechanics Wuhan University of Technology, Wuhan 430070, China

P. C. ZhaiDepartment of Engineering Structure and Mechanics Wuhan University of Technology, Wuhan 430070, China

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Abstract

The graded structure of functionally graded materials can greatly reduce the residual thermal stress compared with non-graded interface of directly jointed materials. Finite element analysis was conducted to study the residual thermal stress induced on cooling from the sintering temperature of Ti₃SiC₂–(Ti₃SiC₂–SiC) FMGs. For a circular disk shaped specimen with a fixed geometric size of Ti₃SiC₂–(Ti₃SiC₂–SiC) FMGs, optimum grade layer number N as well as composition distribution exponent p for minimising residual stress is identified. The simulation results indicated that the optimum layer number N and composition distribution exponent p can not only reduce the stress level, but also make the stress distribute more uniformly.

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Ti₃SiC₂–(Ti₃SiC₂–SiC) functionally graded materials by spark plasma sintering reactive synthesis method Part 1 – gradient optimizations

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Ti₃SiC₂–(Ti₃SiC₂–SiC) functionally graded materials by spark plasma sintering reactive synthesis method Part 1 – gradient optimizations