Metallurgical and Materials Transactions A

, Volume 36, Issue 5, pp 1263–1271

Mechanical performance of the AlxCoCrCuFeNi high-entropy alloy system with multiprincipal elements

  • Chung-Jin Tong
  • Min-Rui Chen
  • Jien-Wei Yeh
  • Su-Jien Lin
  • Swe-Kai Chen
  • Tao-Tsung Shun
  • Shou-Yi Chang
Article

DOI: 10.1007/s11661-005-0218-9

Cite this article as:
Tong, CJ., Chen, MR., Yeh, JW. et al. Metall and Mat Trans A (2005) 36: 1263. doi:10.1007/s11661-005-0218-9

Abstract

The AlxCoCrCuFeNi alloys with multiprincipal elements (x=the aluminum content in molar ratio, from 0 to 3.0) were synthesized using a well-developed arc-melting and casting method, and their mechanical properties were investigated. These alloys exhibited promising mechanical properties, including excellent elevated-temperature strength and good wear resistance. With the addition of aluminum from x=0 to 3.0, the hardness of the alloys increased from HV 133 to 655, mainly attributed to the increased portion of strong bcc phase to ductile fcc phase, both of which were strengthened by the solid solution of aluminum atoms and the precipitation of nanophases. The alloys exhibited superior high-temperature strengths up to 800 °C, among which the Al0.5CoCrCuFeNi alloy, especially, had enhanced plasticity and a large strain-hardening capacity. Moreover, the wear resistance of these alloys was similar to that of ferrous alloys at the same hardness level, while the alloys with lower hardness exhibited relatively higher resistance because of their large strain-hardening capacity.

Copyright information

© ASM International & TMS-The Minerals, Metals and Materials Society 2005

Authors and Affiliations

  • Chung-Jin Tong
    • 1
  • Min-Rui Chen
    • 1
  • Jien-Wei Yeh
    • 1
  • Su-Jien Lin
    • 1
  • Swe-Kai Chen
    • 2
  • Tao-Tsung Shun
    • 3
  • Shou-Yi Chang
    • 4
  1. 1.Department of Materials Science and Engineeringthe National Tsing Hua UniversityHsinchuTaiwan
  2. 2.Materials Science Centerthe National Tsing Hua UniversityHsinchuTaiwan
  3. 3.the Department of Materials Science and EngineeringFeng Chia UniversityTaichungTaiwan
  4. 4.the Department of Materials EngineeringNational Chung Hsing UniversityTaichungTaiwan

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