Improvement of mechanical properties in SUS304L steel through the control of bimodal microstructure characteristics
Zhang, Zhe ; Vajpai, Sanjay Kumar ; Orlov, Dmitry LU
and Ameyama, Kei
(2014)
In Materials Science & Engineering: A
598.
p.106-113
- Abstract
The present work deals with achieving improvement in the mechanical properties of SUS304L stainless steel through the application of a unique microstructure design termed as 'Harmonic structure', and establishing a co-relationship between various microstructural characteristics and mechanical properties. Harmonic structure essentially means a bimodal grain size distribution with a specific periodic arrangement of coarse- and ultrafine-grain fractions. SUS304L stainless steel samples having such microstructure were fabricated by a powder metallurgy route involving the mechanical milling of pre-alloyed steel powder followed by spark plasma sintering. Due to these peculiar microstructural characteristics, the harmonic-structured SUS304L... (More)
The present work deals with achieving improvement in the mechanical properties of SUS304L stainless steel through the application of a unique microstructure design termed as 'Harmonic structure', and establishing a co-relationship between various microstructural characteristics and mechanical properties. Harmonic structure essentially means a bimodal grain size distribution with a specific periodic arrangement of coarse- and ultrafine-grain fractions. SUS304L stainless steel samples having such microstructure were fabricated by a powder metallurgy route involving the mechanical milling of pre-alloyed steel powder followed by spark plasma sintering. Due to these peculiar microstructural characteristics, the harmonic-structured SUS304L stainless steels demonstrated a winning combination of high strength, large uniform elongation, and large total elongation to failure, simultaneously. It was also found that the fraction of a shell area (a three-dimensional continuously connected network of ultrafine-grained structure) is an important parameter controlling the balance of the mechanical properties of the harmonic-structured SUS304L steel compacts.
(Less)
- author
- Zhang, Zhe
; Vajpai, Sanjay Kumar
; Orlov, Dmitry
LU
and Ameyama, Kei
- publishing date
- 2014-03-26
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Bimodal grain structure, Harmonic structure, Mechanical property, Microstructure design, Stainless steel
- in
- Materials Science & Engineering: A
- volume
- 598
- pages
- 8 pages
- publisher
- Elsevier
- external identifiers
-
- scopus:84893368534
- ISSN
- 0921-5093
- DOI
- 10.1016/j.msea.2014.01.023
- language
- English
- LU publication?
- no
- id
- 01c2f258-273c-4ba1-a83c-0d423a4e5aba
- date added to LUP
- 2016-06-20 15:57:39
- date last changed
- 2022-04-24 08:17:13
@article{01c2f258-273c-4ba1-a83c-0d423a4e5aba,
abstract = {{<p>The present work deals with achieving improvement in the mechanical properties of SUS304L stainless steel through the application of a unique microstructure design termed as 'Harmonic structure', and establishing a co-relationship between various microstructural characteristics and mechanical properties. Harmonic structure essentially means a bimodal grain size distribution with a specific periodic arrangement of coarse- and ultrafine-grain fractions. SUS304L stainless steel samples having such microstructure were fabricated by a powder metallurgy route involving the mechanical milling of pre-alloyed steel powder followed by spark plasma sintering. Due to these peculiar microstructural characteristics, the harmonic-structured SUS304L stainless steels demonstrated a winning combination of high strength, large uniform elongation, and large total elongation to failure, simultaneously. It was also found that the fraction of a shell area (a three-dimensional continuously connected network of ultrafine-grained structure) is an important parameter controlling the balance of the mechanical properties of the harmonic-structured SUS304L steel compacts.</p>}},
author = {{Zhang, Zhe and Vajpai, Sanjay Kumar and Orlov, Dmitry and Ameyama, Kei}},
issn = {{0921-5093}},
keywords = {{Bimodal grain structure; Harmonic structure; Mechanical property; Microstructure design; Stainless steel}},
language = {{eng}},
month = {{03}},
pages = {{106--113}},
publisher = {{Elsevier}},
series = {{Materials Science & Engineering: A}},
title = {{Improvement of mechanical properties in SUS304L steel through the control of bimodal microstructure characteristics}},
url = {{http://dx.doi.org/10.1016/j.msea.2014.01.023}},
doi = {{10.1016/j.msea.2014.01.023}},
volume = {{598}},
year = {{2014}},
}