EXPERIMENTAL BASIS FOR THE EXTENSION OF ELASTIC-PERFECTLY PLASTIC STRAIN LIMITS EVALUATION PROCEDURE OF ASME SECTION III, DIVISION 5 CODE CASE N-861 TO GRADE 91, ALLOY 800H AND 2.25CR-1MO

Yanli Wang; Peijun Hou; Ting Leung Sham

doi:10.1115/PVP2022-84817

EXPERIMENTAL BASIS FOR THE EXTENSION OF ELASTIC-PERFECTLY PLASTIC STRAIN LIMITS EVALUATION PROCEDURE OF ASME SECTION III, DIVISION 5 CODE CASE N-861 TO GRADE 91, ALLOY 800H AND 2.25CR-1MO

Yanli Wang, Peijun Hou, Ting Leung Sham

Mechanical Properties and Mechanics

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

The Elastic-Perfectly Plastic (EPP) based design method was qualified for ASME Section III, Division 5 Class A construction using Type 304 and 316 stainless steels and Alloy 617 via Code Case N-861 for Strain Limits evaluations. Because the isochronous stress-strain curves used in the EPP Strain Limits analysis were determined from standard creep testing on specimens without any prior cyclic loading history, experimental verification and analysis are required in order to extend the EPP Strain Limits analysis to the remaining three Class A materials, Grade 91, Alloy 800H and 2.25Cr-1Mo. In this study, specialized tests were designed and performed to evaluate the effects of cyclic deformation on the subsequent creep properties of these three Class A materials in the creep regime and the results are compared with standard creep tests. It is shown that reduction factors on the isochronous stress-strain curves are needed for Grade 91 to account for its cyclic softening effect. However, prior cyclic deformation has an insignificant effect on the minimum creep rates of Alloy 800H and 2.25Cr-1Mo, hence reduction factors are not required. The experimental results and analysis in this study provide the technical basis for the extension of Code Case N-861 to these three Class A materials.

Original language	English
Title of host publication	Codes and Standards
Publisher	American Society of Mechanical Engineers (ASME)
ISBN (Electronic)	9780791886144
DOIs	https://doi.org/10.1115/PVP2022-84817
State	Published - 2022
Event	ASME 2022 Pressure Vessels and Piping Conference, PVP 2022 - Las Vegas, United States Duration: Jul 17 2022 → Jul 22 2022

Publication series

Name	American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP
Volume	1
ISSN (Print)	0277-027X

Conference

Conference	ASME 2022 Pressure Vessels and Piping Conference, PVP 2022
Country/Territory	United States
City	Las Vegas
Period	07/17/22 → 07/22/22

Funding

The research was sponsored by the U.S. Department of Energy, Office of Nuclear Energy, under contract No. DEAC05-00OR22725 with Oak Ridge National Laboratory (ORNL), managed and operated by UT-Battelle, LLC, and under contract No. DE-AC07-05ID14517 with Idaho National Laboratory (INL), managed and operated by Battelle Energy Alliance, LLC. Programmatic direction was provided by the Office of Nuclear Reactor Deployment of the Office of Nuclear Energy. The research was sponsored by the U.S. Department of Energy, Office of Nuclear Energy, under contract No. DE-AC05-00OR22725 with Oak Ridge National Laboratory (ORNL), managed and operated by UT-Battelle, LLC, and under contract No. DE-AC07-05ID14517 with Idaho National Laboratory (INL), managed and operated by Battelle Energy Alliance, LLC. Programmatic direction was provided by the Office of Nuclear Reactor Deployment of the Office of Nuclear Energy. This manuscript has been co-authored by Battelle Energy Alliance, LLC, under Contract No. DE-AC07-05ID14517 and by UT-Battelle LLC, under Contract No. DE-AC0500OR22725, with the U.S. Department of Energy. The United States Government retains and the publisher, by accepting the article for publication, acknowledges that the United States Government retains a nonexclusive, paid-up, irrevocable, world-wide license to publish or reproduce the published form of this manuscript, or allow others to do so, for United States Government purposes.

Funders	Funder number
Battelle Energy Alliance
Office of Nuclear Reactor Deployment
U.S. Department of Energy
Office of Nuclear Energy	DE-AC05-00OR22725
Oak Ridge National Laboratory	DE-AC07-05ID14517
Idaho National Laboratory
UT-Battelle	DE-AC0500OR22725

Keywords

2.25Cr-1Mo
Alloy 800H
EPP Strain Limits
Grade 91

Access to Document

10.1115/PVP2022-84817

Cite this

Wang, Y., Hou, P., & Sham, T. L. (2022). EXPERIMENTAL BASIS FOR THE EXTENSION OF ELASTIC-PERFECTLY PLASTIC STRAIN LIMITS EVALUATION PROCEDURE OF ASME SECTION III, DIVISION 5 CODE CASE N-861 TO GRADE 91, ALLOY 800H AND 2.25CR-1MO. In Codes and Standards Article V001T01A040 (American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP; Vol. 1). American Society of Mechanical Engineers (ASME). https://doi.org/10.1115/PVP2022-84817

Wang, Yanli ; Hou, Peijun ; Sham, Ting Leung. / EXPERIMENTAL BASIS FOR THE EXTENSION OF ELASTIC-PERFECTLY PLASTIC STRAIN LIMITS EVALUATION PROCEDURE OF ASME SECTION III, DIVISION 5 CODE CASE N-861 TO GRADE 91, ALLOY 800H AND 2.25CR-1MO. Codes and Standards. American Society of Mechanical Engineers (ASME), 2022. (American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP).

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title = "EXPERIMENTAL BASIS FOR THE EXTENSION OF ELASTIC-PERFECTLY PLASTIC STRAIN LIMITS EVALUATION PROCEDURE OF ASME SECTION III, DIVISION 5 CODE CASE N-861 TO GRADE 91, ALLOY 800H AND 2.25CR-1MO",

abstract = "The Elastic-Perfectly Plastic (EPP) based design method was qualified for ASME Section III, Division 5 Class A construction using Type 304 and 316 stainless steels and Alloy 617 via Code Case N-861 for Strain Limits evaluations. Because the isochronous stress-strain curves used in the EPP Strain Limits analysis were determined from standard creep testing on specimens without any prior cyclic loading history, experimental verification and analysis are required in order to extend the EPP Strain Limits analysis to the remaining three Class A materials, Grade 91, Alloy 800H and 2.25Cr-1Mo. In this study, specialized tests were designed and performed to evaluate the effects of cyclic deformation on the subsequent creep properties of these three Class A materials in the creep regime and the results are compared with standard creep tests. It is shown that reduction factors on the isochronous stress-strain curves are needed for Grade 91 to account for its cyclic softening effect. However, prior cyclic deformation has an insignificant effect on the minimum creep rates of Alloy 800H and 2.25Cr-1Mo, hence reduction factors are not required. The experimental results and analysis in this study provide the technical basis for the extension of Code Case N-861 to these three Class A materials.",

keywords = "2.25Cr-1Mo, Alloy 800H, EPP Strain Limits, Grade 91",

author = "Yanli Wang and Peijun Hou and Sham, {Ting Leung}",

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doi = "10.1115/PVP2022-84817",

language = "English",

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Wang, Y, Hou, P & Sham, TL 2022, EXPERIMENTAL BASIS FOR THE EXTENSION OF ELASTIC-PERFECTLY PLASTIC STRAIN LIMITS EVALUATION PROCEDURE OF ASME SECTION III, DIVISION 5 CODE CASE N-861 TO GRADE 91, ALLOY 800H AND 2.25CR-1MO. in Codes and Standards., V001T01A040, American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP, vol. 1, American Society of Mechanical Engineers (ASME), ASME 2022 Pressure Vessels and Piping Conference, PVP 2022, Las Vegas, United States, 07/17/22. https://doi.org/10.1115/PVP2022-84817

EXPERIMENTAL BASIS FOR THE EXTENSION OF ELASTIC-PERFECTLY PLASTIC STRAIN LIMITS EVALUATION PROCEDURE OF ASME SECTION III, DIVISION 5 CODE CASE N-861 TO GRADE 91, ALLOY 800H AND 2.25CR-1MO. / Wang, Yanli; Hou, Peijun; Sham, Ting Leung.
Codes and Standards. American Society of Mechanical Engineers (ASME), 2022. V001T01A040 (American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP; Vol. 1).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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PY - 2022

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N2 - The Elastic-Perfectly Plastic (EPP) based design method was qualified for ASME Section III, Division 5 Class A construction using Type 304 and 316 stainless steels and Alloy 617 via Code Case N-861 for Strain Limits evaluations. Because the isochronous stress-strain curves used in the EPP Strain Limits analysis were determined from standard creep testing on specimens without any prior cyclic loading history, experimental verification and analysis are required in order to extend the EPP Strain Limits analysis to the remaining three Class A materials, Grade 91, Alloy 800H and 2.25Cr-1Mo. In this study, specialized tests were designed and performed to evaluate the effects of cyclic deformation on the subsequent creep properties of these three Class A materials in the creep regime and the results are compared with standard creep tests. It is shown that reduction factors on the isochronous stress-strain curves are needed for Grade 91 to account for its cyclic softening effect. However, prior cyclic deformation has an insignificant effect on the minimum creep rates of Alloy 800H and 2.25Cr-1Mo, hence reduction factors are not required. The experimental results and analysis in this study provide the technical basis for the extension of Code Case N-861 to these three Class A materials.

AB - The Elastic-Perfectly Plastic (EPP) based design method was qualified for ASME Section III, Division 5 Class A construction using Type 304 and 316 stainless steels and Alloy 617 via Code Case N-861 for Strain Limits evaluations. Because the isochronous stress-strain curves used in the EPP Strain Limits analysis were determined from standard creep testing on specimens without any prior cyclic loading history, experimental verification and analysis are required in order to extend the EPP Strain Limits analysis to the remaining three Class A materials, Grade 91, Alloy 800H and 2.25Cr-1Mo. In this study, specialized tests were designed and performed to evaluate the effects of cyclic deformation on the subsequent creep properties of these three Class A materials in the creep regime and the results are compared with standard creep tests. It is shown that reduction factors on the isochronous stress-strain curves are needed for Grade 91 to account for its cyclic softening effect. However, prior cyclic deformation has an insignificant effect on the minimum creep rates of Alloy 800H and 2.25Cr-1Mo, hence reduction factors are not required. The experimental results and analysis in this study provide the technical basis for the extension of Code Case N-861 to these three Class A materials.

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T3 - American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP

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Wang Y, Hou P, Sham TL. EXPERIMENTAL BASIS FOR THE EXTENSION OF ELASTIC-PERFECTLY PLASTIC STRAIN LIMITS EVALUATION PROCEDURE OF ASME SECTION III, DIVISION 5 CODE CASE N-861 TO GRADE 91, ALLOY 800H AND 2.25CR-1MO. In Codes and Standards. American Society of Mechanical Engineers (ASME). 2022. V001T01A040. (American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP). doi: 10.1115/PVP2022-84817

EXPERIMENTAL BASIS FOR THE EXTENSION OF ELASTIC-PERFECTLY PLASTIC STRAIN LIMITS EVALUATION PROCEDURE OF ASME SECTION III, DIVISION 5 CODE CASE N-861 TO GRADE 91, ALLOY 800H AND 2.25CR-1MO

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