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Microstructure and phase transformation behavior of Ni-Mn-Fe high-temperature shape memory alloys

  • Cui Ping Wang
  • , Yu Ding Liu
  • , Shui Yuan Yang*
  • , Xing Jun Liu
  • *Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The microstructure and phase transformation behavior of Ni-Mn-Fe high-temperature shape memory alloys including Ni40+xFe10Mn50-x (x = 0, 10) were investigated. The results show that both two alloys exhibit single fcc γ phase annealed at 900°C for 1 day. When these quenched alloys are again annealed at 500°C for 20 days, they almost exhibit main tetragonal θ martensite. The microstructural evolutions are consistent with the results of phase transformation measurements. It is clearly found that there is an irreversible phase transformation around 480°C ~ 570°C, which is associated with the formation of tetragonal θ martensite from γ phase. Afterwards, the reversible martensitic transformation occurs during heating and cooling with very high transformation temperature.

Original languageEnglish
Title of host publicationApplied Materials and Technologies
EditorsXiaopeng Xiong, Ran Zhang
PublisherTrans Tech Publications Ltd
Pages63-66
Number of pages4
ISBN (Print)9783038355960
DOIs
StatePublished - 2015
Externally publishedYes
Event9th International Forum on Advanced Material Science and Technology, IFAMST9 2014 - Xiamen, China
Duration: 30 Nov 20143 Dec 2014

Publication series

NameMaterials Science Forum
Volume833
ISSN (Print)0255-5476
ISSN (Electronic)1662-9752

Conference

Conference9th International Forum on Advanced Material Science and Technology, IFAMST9 2014
Country/TerritoryChina
CityXiamen
Period30/11/143/12/14

Keywords

  • High-temperature shape memory alloys
  • Microstructure
  • Phase transformation

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