Influence of the microstructural inhomogeneities on the martensite-to-austenite phase transformation temperatures in TiNiCu-based shape-memory alloys

Research output: Contribution to journalArticlepeer-review

Authors

Colleges, School and Institutes

Abstract

The morphology and distribution of Ti2Ni precipitates in two batches of Ti-40.8Ni-9Cu (at.%) shape-memory alloys were studied to understand the influence of microstructural inhomogeneities on the martensite-to-austenite phase transformation. Although both batches were produced using nominally identical processing conditions at the same facility, the transformation temperatures were remarkably different. Such behaviour was linked to stereological differences in the precipitates morphology and size distributions, as well as slight differences in the chemical composition

Details

Original languageEnglish
Pages (from-to)272-277
Number of pages6
JournalMaterials Chemistry and Physics
Volume141
Issue number1
Publication statusPublished - 15 Aug 2013

Keywords

  • Differential scanning calorimetry, Energy-dispersive analysis of X-rays, Martensitic transformations, Microstructure, Shape-memory effects