Effect of cooling rate on phase transformation and microstructure of TC21 titanium alloy

Hui Shao, Yongqing Zhao, Peng Ge, Weidong Zeng, Kaixuan Wang

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

1 Scopus citations

Abstract

Effect of cooling rate from β phase region on phase transformation and microstructure of TC21 titanium alloy were investigated. Martensites, α and β phases are formed under different cooling conditions. Water quenching and air cooling result in the formations of α′ and α″ martensitic microstructures, characterized by parallel or orthogonal acicular martensitic plates. The phase transformation process is gradually dominated by diffusion mechanism with decrease of cooling rate. At furnace cooling rate, colony microstructure, characterized by parallel α laths separated by β phase,is formed. As the increase of cooling rate, the colony microstructure changes into mixed microstructure, characterized by the combination of colony microstructure and basketweave microstructure.

Original languageEnglish
Title of host publicationTi 2011 - Proceedings of the 12th World Conference on Titanium
Pages637-639
Number of pages3
StatePublished - 2012
Event12th World Conference on Titanium, Ti 2011 - Beijing, China
Duration: 19 Jun 201124 Jun 2011

Publication series

NameTi 2011 - Proceedings of the 12th World Conference on Titanium
Volume1

Conference

Conference12th World Conference on Titanium, Ti 2011
Country/TerritoryChina
CityBeijing
Period19/06/1124/06/11

Keywords

  • Cooling rate
  • Microstructure
  • Phase
  • TC21 alloy

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