Effect of thermal cycling(γ↔ε) on martensitic transformation kinetics and damping capacity of Fe -17mass%Mn alloy

Young-Kook Lee, Young Seob Seo, Won Jin, Chong Sool Choi

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Effect of thermal cycling(γ↔ε) on γ↔ε martensitic transformation kinetics and damping capacity of Fe-17mass%Mn alloy has been studied. The amount of ε martensite increases with thermal cycling in spite of decrease in Ms temperature. The increase in ε martensite content with thermal cycling is attributable to an increase in the density of martensite nucleation sites by introduction of dislocations during thermal cycling. The γ↔ε martensitic transformation kinetics shows a burst mode in the non-cycled specimen, while the kinetics exhibits a sigmoidal mode in the cycled specimens. The damping capacity of the alloy increases with increasing the ε martensite content in the non-cycled specimen. On the contrary, the damping capacity of the alloy decreases with increasing the ε martensite content in the cycled specimens. The reason is that the dislocations introduced during thermal cycling, which obstruct the movement of the damping sources, become more with thermal cycling.

Original languageEnglish
Pages (from-to)59-66
Number of pages8
JournalKey Engineering Materials
Volume319
DOIs
Publication statusPublished - 2006 Sep 14

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Martensitic transformations
Thermal cycling
Martensite
Damping
Kinetics
Nucleation

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

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title = "Effect of thermal cycling(γ↔ε) on martensitic transformation kinetics and damping capacity of Fe -17mass{\%}Mn alloy",
abstract = "Effect of thermal cycling(γ↔ε) on γ↔ε martensitic transformation kinetics and damping capacity of Fe-17mass{\%}Mn alloy has been studied. The amount of ε martensite increases with thermal cycling in spite of decrease in Ms temperature. The increase in ε martensite content with thermal cycling is attributable to an increase in the density of martensite nucleation sites by introduction of dislocations during thermal cycling. The γ↔ε martensitic transformation kinetics shows a burst mode in the non-cycled specimen, while the kinetics exhibits a sigmoidal mode in the cycled specimens. The damping capacity of the alloy increases with increasing the ε martensite content in the non-cycled specimen. On the contrary, the damping capacity of the alloy decreases with increasing the ε martensite content in the cycled specimens. The reason is that the dislocations introduced during thermal cycling, which obstruct the movement of the damping sources, become more with thermal cycling.",
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Effect of thermal cycling(γ↔ε) on martensitic transformation kinetics and damping capacity of Fe -17mass%Mn alloy. / Lee, Young-Kook; Seo, Young Seob; Jin, Won; Choi, Chong Sool.

In: Key Engineering Materials, Vol. 319, 14.09.2006, p. 59-66.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Effect of thermal cycling(γ↔ε) on martensitic transformation kinetics and damping capacity of Fe -17mass%Mn alloy

AU - Lee, Young-Kook

AU - Seo, Young Seob

AU - Jin, Won

AU - Choi, Chong Sool

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AB - Effect of thermal cycling(γ↔ε) on γ↔ε martensitic transformation kinetics and damping capacity of Fe-17mass%Mn alloy has been studied. The amount of ε martensite increases with thermal cycling in spite of decrease in Ms temperature. The increase in ε martensite content with thermal cycling is attributable to an increase in the density of martensite nucleation sites by introduction of dislocations during thermal cycling. The γ↔ε martensitic transformation kinetics shows a burst mode in the non-cycled specimen, while the kinetics exhibits a sigmoidal mode in the cycled specimens. The damping capacity of the alloy increases with increasing the ε martensite content in the non-cycled specimen. On the contrary, the damping capacity of the alloy decreases with increasing the ε martensite content in the cycled specimens. The reason is that the dislocations introduced during thermal cycling, which obstruct the movement of the damping sources, become more with thermal cycling.

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