A new microstructure design for high performance structure metallic materials

Kei Ameyama, Mie Kawabata, Bhupendra Sharma

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Harmonic structure (HS) design is one of the heterogeneous microstructure designs, and it is heterogeneous on micro-but homogeneous on macro-scales. In the present work, the HS design has been applied to various kinds of metals and alloys via a powder metallurgy route consisting of controlled severe plastic deformation, and subsequent sintering. The HS materials exhibited superior combination of strength and ductility, as well as tensile toughness, as compared to their homogeneous microstructure counterparts. Noteworthy is that the HS materials indicate “micro-scale stress concentration” and “macro-scale strain dispersion” which lead to a large work hardening and a large uniform elongation without deformation localization.

Original languageEnglish
Title of host publicationProceedings of the 29th International Ocean and Polar Engineering Conference, ISOPE 2019
EditorsJin S. Chung, Odd M. Akselsen, HyunWoo Jin, Hiroyasu Kawai, Yongwon Lee, Dmitri Matskevitch, Suak Ho Van, Decheng Wan, Alan M. Wang, Satoru Yamaguchi
PublisherInternational Society of Offshore and Polar Engineers
Pages3868-3873
Number of pages6
ISBN (Print)9781880653852
Publication statusPublished - 2019
Externally publishedYes
Event29th International Ocean and Polar Engineering Conference, ISOPE 2019 - Honolulu, United States
Duration: Jun 16 2019Jun 21 2019

Publication series

NameProceedings of the International Offshore and Polar Engineering Conference
Volume4
ISSN (Print)1098-6189
ISSN (Electronic)1555-1792

Conference

Conference29th International Ocean and Polar Engineering Conference, ISOPE 2019
Country/TerritoryUnited States
CityHonolulu
Period6/16/196/21/19

All Science Journal Classification (ASJC) codes

  • Energy Engineering and Power Technology
  • Ocean Engineering
  • Mechanical Engineering

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