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Journal of Materials Science

, Volume 30, Issue 6, pp 1577–1583 | Cite as

A study on martensitic transformation in Ti50−x/2Ni50−x/2Cux alloys with X≤10 at%

  • Y. C. Lo
  • S. K. Wu
Papers

Abstract

The effect of Cu additions on the martensitic transformation sequence and temperature in Ti50−x/2Ni50−x/2Cuxalloys with x: 1–10 at% are investigated by ER, DSC, X-ray and IF measurements. Experimental results show that the transformation sequence of Ti50−x/2Ni50−x/2Cux alloys with x: 1–4 at% proceeding as two-stage B2→R→B19′ transformation on cooling and Ti50−x/2Ni50−x/2Cux alloys with x=5, 10 at% have no martensitic transformation. The addition of Cu in Ti50−x/2Ni50−x/2Cux alloys assists the formation of R-phase, a behaviour which is quite different from that in Ti50Ni50−xCux alloys. Both the Ms and TR temperatures decrease rapidly with increasing Cu addition in Ti50−x/2Ni50−x/2Cux alloys with x: 1–4 at%. It is proposed that the Cu+Ni effects on the Ms temperature in Ti50−x/2Ni50−x/2Cux alloys is similar as Cu +Ni effects in Ti50Ni50−xCux alloys and as Ni effects in as-quenched Ni-rich TiNi alloys.

Keywords

Polymer Material Processing Martensitic Transformation TiNi TiNi Alloy 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Chapman & Hall 1995

Authors and Affiliations

  • Y. C. Lo
    • 1
  • S. K. Wu
    • 1
  1. 1.Institute of Materials Science and EngineeringNational Taiwan UniversityTaipeiTaiwan, Republic of China

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