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Property Estimation of Functionally Graded Materials Between M2 Tool Steel and Cu Fabricated by Powder Metallurgy

분말야금으로 제작된 M2 공구강과 Cu 간 기능성 경사 복합재의 물성 평가

  • Jeong, Jong-Seol (Graduate School of NID Fusion Technology, Seoul Nat'l Univ. of Science and Technology) ;
  • Shin, Ki-Hoon (Dept. of Mechanical and Automotive Engineering, Seoul Nat'l Univ. of Science and Technology)
  • 정종설 (서울과학기술대학교 NID 융합기술대학원) ;
  • 신기훈 (서울과학기술대학교 기계자동차공학과)
  • Received : 2014.04.14
  • Accepted : 2014.06.02
  • Published : 2014.09.01

Abstract

The use of functionally graded materials (FGMs) may enhance thermal conductivity without reducing the desired strength in many applications such as injection molds embedding conformal cooling channels and cutting tools with heat sinks (or cooling devices). As a fundamental study for cutting tools having FGM heat sinks between M2 tool steel and Cu, six FGM specimens (M2 and Cu powders were premixed such that the relative compositions of M2 and Cu were 100:0, 80:20, 60:40, 40:60, 20:80, and 0:100 wt%) were fabricated by powder metallurgy in this study. The cross sections of these specimens were observed by optical microscopy, and then the material properties (such as thermal conductivity, specific heat, and coefficient of thermal expansion) related to heat transfer were measured and analyzed.

Keywords

Functionally Graded Materials(FGMs);M2 Tool Steel;Powder Metallurgy;Thermal Conductivity;Coefficient of Thermal Expansion(CTE)

Acknowledgement

Supported by : 한국연구재단

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