High-temperature tensile and creep deformation of cross-weld specimens of weld joint between T92 martensitic and Super304H austenitic steels

Myung Yeon Kim, Suk Chul Kwak, In Suk Choi, Young Kook Lee, Jin Yoo Suh, Eric Fleury, Woo Sang Jung, Tae Ha Son

Research output: Contribution to journalArticle

24 Citations (Scopus)

Abstract

The high-temperature mechanical behavior of cross-weld specimens prepared from a dissimilar weld joint between T92 martensitic and Super304H austenitic heat-resistant steels incorporating Ni-based weld metal was evaluated at temperatures up to 650°C. For both high temperature tensile and creep tests, failure took place in T92 due to its faster degradation with temperature increase. The heat-affected zone of T92 played a critical role during creep deformation, resulting in type IV failure under the long-term creep condition. For the creep specimens, the location of failure shifted from the base metal region to the fine-grained heat-affected zone as the creep duration time increased from the short-term to the long-term condition. The massive precipitation of Laves phase on the grain boundaries of the fine-grained heat-affected zone during creep deformation was observed and found to be responsible for the accelerated void formation in the area leading to the premature failure.

Original languageEnglish
Pages (from-to)161-168
Number of pages8
JournalMaterials Characterization
Volume97
DOIs
Publication statusPublished - 2014 Nov

Fingerprint

tensile creep
tensile deformation
Austenitic steel
heat affected zone
Creep
Welds
steels
Heat affected zone
creep tests
Temperature
Laves phases
tensile tests
Metals
metals
voids
grain boundaries
Steel
degradation
heat
temperature

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Kim, Myung Yeon ; Kwak, Suk Chul ; Choi, In Suk ; Lee, Young Kook ; Suh, Jin Yoo ; Fleury, Eric ; Jung, Woo Sang ; Son, Tae Ha. / High-temperature tensile and creep deformation of cross-weld specimens of weld joint between T92 martensitic and Super304H austenitic steels. In: Materials Characterization. 2014 ; Vol. 97. pp. 161-168.
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High-temperature tensile and creep deformation of cross-weld specimens of weld joint between T92 martensitic and Super304H austenitic steels. / Kim, Myung Yeon; Kwak, Suk Chul; Choi, In Suk; Lee, Young Kook; Suh, Jin Yoo; Fleury, Eric; Jung, Woo Sang; Son, Tae Ha.

In: Materials Characterization, Vol. 97, 11.2014, p. 161-168.

Research output: Contribution to journalArticle

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AU - Kim, Myung Yeon

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AU - Lee, Young Kook

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AU - Fleury, Eric

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AU - Son, Tae Ha

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