Strain hardening and plastic instability of dual-phase steels for strain based design

Kyono Yasuda; Hitoshi Sueyoshi; Nobuyuki Ishikawa; Tatsuya Morikawa; Kenji Higashida

Strain hardening and plastic instability of dual-phase steels for strain based design

Kyono Yasuda, Hitoshi Sueyoshi, Nobuyuki Ishikawa, Tatsuya Morikawa, Kenji Higashida

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

Abstract

For understanding deformation behavior in terms of microstructural aspects, ferrite-bainite steels were analyzed by the micro-grid method and FEA using unit cell model. Using the micro-grid method, it was directly observed that significant localization of strain occurred in ferrite phase adjacent to the ferrite/bainite boundary. From the FE results, higher internal stress was calculated in larger volume fraction of hard phase. Under further deformation, strain hardenability decrease due to lower stress distribution caused by plastic deformation in bainite. From the observation and analysis of the microscopic deformation behavior, a plastic instability condition of ferrite-bainite dual-phase steels was estimated.

Original language	English
Title of host publication	Proceedings of the 25th International Ocean and Polar Engineering Conference, ISOPE 2015
Publisher	International Society of Offshore and Polar Engineers
Pages	639-645
Number of pages	7
ISBN (Electronic)	9781880653890
Publication status	Published - 2015
Event	25th International Ocean and Polar Engineering Conference, ISOPE 2015 - Kona, Big Island, United States Duration: Jun 21 2015 → Jun 26 2015

Publication series

Name	Proceedings of the International Offshore and Polar Engineering Conference
Volume	2015-January
ISSN (Print)	1098-6189
ISSN (Electronic)	1555-1792

Other

Other	25th International Ocean and Polar Engineering Conference, ISOPE 2015
Country/Territory	United States
City	Kona, Big Island
Period	6/21/15 → 6/26/15

All Science Journal Classification (ASJC) codes

Energy Engineering and Power Technology
Ocean Engineering
Mechanical Engineering

Cite this

Yasuda, K., Sueyoshi, H., Ishikawa, N., Morikawa, T., & Higashida, K. (2015). Strain hardening and plastic instability of dual-phase steels for strain based design. In Proceedings of the 25th International Ocean and Polar Engineering Conference, ISOPE 2015 (pp. 639-645). (Proceedings of the International Offshore and Polar Engineering Conference; Vol. 2015-January). International Society of Offshore and Polar Engineers.

Strain hardening and plastic instability of dual-phase steels for strain based design. / Yasuda, Kyono; Sueyoshi, Hitoshi; Ishikawa, Nobuyuki et al.
Proceedings of the 25th International Ocean and Polar Engineering Conference, ISOPE 2015. International Society of Offshore and Polar Engineers, 2015. p. 639-645 (Proceedings of the International Offshore and Polar Engineering Conference; Vol. 2015-January).

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

Yasuda, K, Sueyoshi, H, Ishikawa, N, Morikawa, T & Higashida, K 2015, Strain hardening and plastic instability of dual-phase steels for strain based design. in Proceedings of the 25th International Ocean and Polar Engineering Conference, ISOPE 2015. Proceedings of the International Offshore and Polar Engineering Conference, vol. 2015-January, International Society of Offshore and Polar Engineers, pp. 639-645, 25th International Ocean and Polar Engineering Conference, ISOPE 2015, Kona, Big Island, United States, 6/21/15.

Yasuda K, Sueyoshi H, Ishikawa N, Morikawa T, Higashida K. Strain hardening and plastic instability of dual-phase steels for strain based design. In Proceedings of the 25th International Ocean and Polar Engineering Conference, ISOPE 2015. International Society of Offshore and Polar Engineers. 2015. p. 639-645. (Proceedings of the International Offshore and Polar Engineering Conference).

Yasuda, Kyono ; Sueyoshi, Hitoshi ; Ishikawa, Nobuyuki et al. / Strain hardening and plastic instability of dual-phase steels for strain based design. Proceedings of the 25th International Ocean and Polar Engineering Conference, ISOPE 2015. International Society of Offshore and Polar Engineers, 2015. pp. 639-645 (Proceedings of the International Offshore and Polar Engineering Conference).

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abstract = "For understanding deformation behavior in terms of microstructural aspects, ferrite-bainite steels were analyzed by the micro-grid method and FEA using unit cell model. Using the micro-grid method, it was directly observed that significant localization of strain occurred in ferrite phase adjacent to the ferrite/bainite boundary. From the FE results, higher internal stress was calculated in larger volume fraction of hard phase. Under further deformation, strain hardenability decrease due to lower stress distribution caused by plastic deformation in bainite. From the observation and analysis of the microscopic deformation behavior, a plastic instability condition of ferrite-bainite dual-phase steels was estimated.",

author = "Kyono Yasuda and Hitoshi Sueyoshi and Nobuyuki Ishikawa and Tatsuya Morikawa and Kenji Higashida",

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AU - Higashida, Kenji

PY - 2015

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N2 - For understanding deformation behavior in terms of microstructural aspects, ferrite-bainite steels were analyzed by the micro-grid method and FEA using unit cell model. Using the micro-grid method, it was directly observed that significant localization of strain occurred in ferrite phase adjacent to the ferrite/bainite boundary. From the FE results, higher internal stress was calculated in larger volume fraction of hard phase. Under further deformation, strain hardenability decrease due to lower stress distribution caused by plastic deformation in bainite. From the observation and analysis of the microscopic deformation behavior, a plastic instability condition of ferrite-bainite dual-phase steels was estimated.

AB - For understanding deformation behavior in terms of microstructural aspects, ferrite-bainite steels were analyzed by the micro-grid method and FEA using unit cell model. Using the micro-grid method, it was directly observed that significant localization of strain occurred in ferrite phase adjacent to the ferrite/bainite boundary. From the FE results, higher internal stress was calculated in larger volume fraction of hard phase. Under further deformation, strain hardenability decrease due to lower stress distribution caused by plastic deformation in bainite. From the observation and analysis of the microscopic deformation behavior, a plastic instability condition of ferrite-bainite dual-phase steels was estimated.

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Strain hardening and plastic instability of dual-phase steels for strain based design

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