Grain Refinement by Cyclic Displacive Forward/Reverse Transformation in Fe-High-Ni Alloys

Tadachika Chiba; Shirazi Hassan; Goro Miyamoto; Tadashi Furuhara

doi:10.1007/s11661-017-4152-4

Grain Refinement by Cyclic Displacive Forward/Reverse Transformation in Fe-High-Ni Alloys

Tadachika Chiba, Shirazi Hassan, Goro Miyamoto, Tadashi Furuhara

Materials Design Division

Research output: Contribution to journal › Article › peer-review

5 Citations (Scopus)

Abstract

A novel method for grain refinement of martensite structures was proposed, in which transformation strain is accumulated by cyclic displacive forward and reverse transformations. This method can refine martensite structures in an Fe-18Ni alloy because a high density of austenite dislocations is introduced by a displacive reverse transformation in addition to an inheritance of dislocations in body-centered cubic martensite into austenite during cyclic transformation. The addition of a small amount of carbon accelerates structure refinement significantly, which results in the formation of ultra-fine-grained structures after ten cycles.

Original language	English
Pages (from-to)	1-7
Number of pages	7
Journal	Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
DOIs	https://doi.org/10.1007/s11661-017-4152-4
Publication status	Accepted/In press - 2017 May 30

ASJC Scopus subject areas

Condensed Matter Physics
Mechanics of Materials
Metals and Alloys

Access to Document

10.1007/s11661-017-4152-4

Cite this

@article{db47f0f2997f4bedb8f4bb1b42df2716,

title = "Grain Refinement by Cyclic Displacive Forward/Reverse Transformation in Fe-High-Ni Alloys",

abstract = "A novel method for grain refinement of martensite structures was proposed, in which transformation strain is accumulated by cyclic displacive forward and reverse transformations. This method can refine martensite structures in an Fe-18Ni alloy because a high density of austenite dislocations is introduced by a displacive reverse transformation in addition to an inheritance of dislocations in body-centered cubic martensite into austenite during cyclic transformation. The addition of a small amount of carbon accelerates structure refinement significantly, which results in the formation of ultra-fine-grained structures after ten cycles.",

author = "Tadachika Chiba and Shirazi Hassan and Goro Miyamoto and Tadashi Furuhara",

note = "Publisher Copyright: {\textcopyright} 2017 The Minerals, Metals & Materials Society and ASM International",

year = "2017",

month = may,

day = "30",

doi = "10.1007/s11661-017-4152-4",

language = "English",

pages = "1--7",

journal = "Metallurgical Transactions A (Physical Metallurgy and Materials Science)",

issn = "1073-5623",

publisher = "Springer Boston",

}

TY - JOUR

T1 - Grain Refinement by Cyclic Displacive Forward/Reverse Transformation in Fe-High-Ni Alloys

AU - Chiba, Tadachika

AU - Hassan, Shirazi

AU - Miyamoto, Goro

AU - Furuhara, Tadashi

PY - 2017/5/30

Y1 - 2017/5/30

N2 - A novel method for grain refinement of martensite structures was proposed, in which transformation strain is accumulated by cyclic displacive forward and reverse transformations. This method can refine martensite structures in an Fe-18Ni alloy because a high density of austenite dislocations is introduced by a displacive reverse transformation in addition to an inheritance of dislocations in body-centered cubic martensite into austenite during cyclic transformation. The addition of a small amount of carbon accelerates structure refinement significantly, which results in the formation of ultra-fine-grained structures after ten cycles.

AB - A novel method for grain refinement of martensite structures was proposed, in which transformation strain is accumulated by cyclic displacive forward and reverse transformations. This method can refine martensite structures in an Fe-18Ni alloy because a high density of austenite dislocations is introduced by a displacive reverse transformation in addition to an inheritance of dislocations in body-centered cubic martensite into austenite during cyclic transformation. The addition of a small amount of carbon accelerates structure refinement significantly, which results in the formation of ultra-fine-grained structures after ten cycles.

UR - http://www.scopus.com/inward/record.url?scp=85019651915&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85019651915&partnerID=8YFLogxK

U2 - 10.1007/s11661-017-4152-4

DO - 10.1007/s11661-017-4152-4

M3 - Article

AN - SCOPUS:85019651915

SP - 1

EP - 7

JO - Metallurgical Transactions A (Physical Metallurgy and Materials Science)

JF - Metallurgical Transactions A (Physical Metallurgy and Materials Science)

SN - 1073-5623

ER -

Grain Refinement by Cyclic Displacive Forward/Reverse Transformation in Fe-High-Ni Alloys

Abstract

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this