Improvement of mechanical properties in SUS304L steel through the control of bimodal microstructure characteristics
(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.
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- 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}}, }