This work is concerned with the development of a modeling framework to predict the effects of tempered–untempered martensite heterogeneity on the thermomechanical performance of welded material. A physically based viscoplasticity model for the intercritical heat-affected zone (ICHAZ) for 9Cr steels (e.g., P91, P92) is presented in this work, with the ICHAZ represented as a mixture of tempered and untempered martensite. The constitutive model includes dislocation-based Taylor hardening and damage for different material phases. A sequentially coupled thermal–mechanical welding simulation is conducted to predict the volume fraction compositions for the various weld-affected material zones in a cross-weld (CW) specimen. The out-of-phase cyclic thermomechanical (25 °C to 600 °C) performance of notched and plain samples is comparatively assessed for a range of different tempered–untempered martensitic material heterogeneities. It is shown that the heterogeneity in a simulated CW material is highly detrimental to thermal cyclic performance.
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April 2019
Research-Article
Predictions of ICHAZ Cyclic Thermomechanical Response in GTAW Process for 9Cr Steels
Padraig Mac Ardghail,
Padraig Mac Ardghail
Mechanical Engineering and Ryan Institute,
NUI Galway,
Alice Perry Engineering Building,
University Road,
Galway H91 HX31, Ireland
e-mail: p.macardghail1@nuigalway.ie
NUI Galway,
Alice Perry Engineering Building,
University Road,
Galway H91 HX31, Ireland
e-mail: p.macardghail1@nuigalway.ie
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Richard A. Barrett,
Richard A. Barrett
Mechanical Engineering and Ryan Institute,
NUI Galway,
Alice Perry Engineering Building,
University Road,
Galway H91 HX31, Ireland
e-mail: richard.barrett@nuigalway.ie
NUI Galway,
Alice Perry Engineering Building,
University Road,
Galway H91 HX31, Ireland
e-mail: richard.barrett@nuigalway.ie
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Noel Harrison,
Noel Harrison
Mechanical Engineering,
NUI Galway,
Alice Perry Engineering Building,
University Road,
Galway X91 HX31, Ireland;
I-Form Advanced Manufacturing Research Centre,
Ireland Ryan Institute,
NUI Galway,
University Road,
Galway X91 TK33, Ireland
e-mail: noel.harrison@nuigalway.ie
NUI Galway,
Alice Perry Engineering Building,
University Road,
Galway X91 HX31, Ireland;
I-Form Advanced Manufacturing Research Centre,
Ireland Ryan Institute,
NUI Galway,
University Road,
Galway X91 TK33, Ireland
e-mail: noel.harrison@nuigalway.ie
Search for other works by this author on:
Sean B. Leen
Sean B. Leen
Mechanical Engineering,
NUI Galway,
Alice Perry Engineering Building,
University Road,
Galway X91 HX31, Ireland;
I-Form Advanced Manufacturing Research Centre,
Ireland Ryan Institute,
NUI Galway,
University Road,
Galway X91 TK33, Ireland
e-mail: sean.leen@nuigalway.ie
NUI Galway,
Alice Perry Engineering Building,
University Road,
Galway X91 HX31, Ireland;
I-Form Advanced Manufacturing Research Centre,
Ireland Ryan Institute,
NUI Galway,
University Road,
Galway X91 TK33, Ireland
e-mail: sean.leen@nuigalway.ie
Search for other works by this author on:
Padraig Mac Ardghail
Mechanical Engineering and Ryan Institute,
NUI Galway,
Alice Perry Engineering Building,
University Road,
Galway H91 HX31, Ireland
e-mail: p.macardghail1@nuigalway.ie
NUI Galway,
Alice Perry Engineering Building,
University Road,
Galway H91 HX31, Ireland
e-mail: p.macardghail1@nuigalway.ie
Richard A. Barrett
Mechanical Engineering and Ryan Institute,
NUI Galway,
Alice Perry Engineering Building,
University Road,
Galway H91 HX31, Ireland
e-mail: richard.barrett@nuigalway.ie
NUI Galway,
Alice Perry Engineering Building,
University Road,
Galway H91 HX31, Ireland
e-mail: richard.barrett@nuigalway.ie
Noel Harrison
Mechanical Engineering,
NUI Galway,
Alice Perry Engineering Building,
University Road,
Galway X91 HX31, Ireland;
I-Form Advanced Manufacturing Research Centre,
Ireland Ryan Institute,
NUI Galway,
University Road,
Galway X91 TK33, Ireland
e-mail: noel.harrison@nuigalway.ie
NUI Galway,
Alice Perry Engineering Building,
University Road,
Galway X91 HX31, Ireland;
I-Form Advanced Manufacturing Research Centre,
Ireland Ryan Institute,
NUI Galway,
University Road,
Galway X91 TK33, Ireland
e-mail: noel.harrison@nuigalway.ie
Sean B. Leen
Mechanical Engineering,
NUI Galway,
Alice Perry Engineering Building,
University Road,
Galway X91 HX31, Ireland;
I-Form Advanced Manufacturing Research Centre,
Ireland Ryan Institute,
NUI Galway,
University Road,
Galway X91 TK33, Ireland
e-mail: sean.leen@nuigalway.ie
NUI Galway,
Alice Perry Engineering Building,
University Road,
Galway X91 HX31, Ireland;
I-Form Advanced Manufacturing Research Centre,
Ireland Ryan Institute,
NUI Galway,
University Road,
Galway X91 TK33, Ireland
e-mail: sean.leen@nuigalway.ie
Contributed by the Pressure Vessel and Piping Division of ASME for publication in the JOURNAL OF PRESSURE VESSEL TECHNOLOGY. Manuscript received July 24, 2017; final manuscript received January 18, 2019; published online February 25, 2019. Assoc. Editor: San Iyer.
J. Pressure Vessel Technol. Apr 2019, 141(2): 021403 (12 pages)
Published Online: February 25, 2019
Article history
Received:
July 24, 2017
Revised:
January 18, 2019
Citation
Mac Ardghail, P., Barrett, R. A., Harrison, N., and Leen, S. B. (February 25, 2019). "Predictions of ICHAZ Cyclic Thermomechanical Response in GTAW Process for 9Cr Steels." ASME. J. Pressure Vessel Technol. April 2019; 141(2): 021403. https://doi.org/10.1115/1.4042712
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