High strength and high uniform ductility in a severely deformed iron alloy by lattice softening and multimodal-structure formation

Kaveh Edalati, Tadahiko Furuta, Takeshi Daio, Shigeru Kuramoto, Zenji Horita

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

Despite high strength of nanostructured alloys,they usually exhibit poor uniform ductility. For many applications,it is an important issue to design new nanostructured alloys which have both high strength and high uniform ductility. In this study,an Fe-Ni-Al-C alloy with ultrahigh tensile strength of 1.9-2.2 GPa and high uniform ductility of 16-19% was developed by concurrent employment of several strategies: (i) appropriate choice of chemical compositions for lattice softening,(ii) severe plastic deformation using the high-pressure torsion method for grain refinement,and (iii) control of strain level for multimodal-structure formation composed of equiaxed nanograins,lamellar coarse grains and fine precipitates.

Original languageEnglish
Pages (from-to)197-202
Number of pages6
JournalMaterials Research Letters
Volume3
Issue number4
DOIs
Publication statusPublished - May 2016

Fingerprint

Iron alloys
Ductility
Grain refinement
Torsional stress
Precipitates
Plastic deformation
Tensile strength
Chemical analysis

All Science Journal Classification (ASJC) codes

  • Materials Science(all)

Cite this

High strength and high uniform ductility in a severely deformed iron alloy by lattice softening and multimodal-structure formation. / Edalati, Kaveh; Furuta, Tadahiko; Daio, Takeshi; Kuramoto, Shigeru; Horita, Zenji.

In: Materials Research Letters, Vol. 3, No. 4, 05.2016, p. 197-202.

Research output: Contribution to journalArticle

Edalati, Kaveh ; Furuta, Tadahiko ; Daio, Takeshi ; Kuramoto, Shigeru ; Horita, Zenji. / High strength and high uniform ductility in a severely deformed iron alloy by lattice softening and multimodal-structure formation. In: Materials Research Letters. 2016 ; Vol. 3, No. 4. pp. 197-202.
@article{9715a5ae331a4f9a8d27e83d7927f8f4,
title = "High strength and high uniform ductility in a severely deformed iron alloy by lattice softening and multimodal-structure formation",
abstract = "Despite high strength of nanostructured alloys,they usually exhibit poor uniform ductility. For many applications,it is an important issue to design new nanostructured alloys which have both high strength and high uniform ductility. In this study,an Fe-Ni-Al-C alloy with ultrahigh tensile strength of 1.9-2.2 GPa and high uniform ductility of 16-19{\%} was developed by concurrent employment of several strategies: (i) appropriate choice of chemical compositions for lattice softening,(ii) severe plastic deformation using the high-pressure torsion method for grain refinement,and (iii) control of strain level for multimodal-structure formation composed of equiaxed nanograins,lamellar coarse grains and fine precipitates.",
author = "Kaveh Edalati and Tadahiko Furuta and Takeshi Daio and Shigeru Kuramoto and Zenji Horita",
year = "2016",
month = "5",
doi = "10.1080/21663831.2015.1050126",
language = "English",
volume = "3",
pages = "197--202",
journal = "Materials Research Letters",
issn = "2166-3831",
publisher = "Taylor and Francis Ltd.",
number = "4",

}

TY - JOUR

T1 - High strength and high uniform ductility in a severely deformed iron alloy by lattice softening and multimodal-structure formation

AU - Edalati, Kaveh

AU - Furuta, Tadahiko

AU - Daio, Takeshi

AU - Kuramoto, Shigeru

AU - Horita, Zenji

PY - 2016/5

Y1 - 2016/5

N2 - Despite high strength of nanostructured alloys,they usually exhibit poor uniform ductility. For many applications,it is an important issue to design new nanostructured alloys which have both high strength and high uniform ductility. In this study,an Fe-Ni-Al-C alloy with ultrahigh tensile strength of 1.9-2.2 GPa and high uniform ductility of 16-19% was developed by concurrent employment of several strategies: (i) appropriate choice of chemical compositions for lattice softening,(ii) severe plastic deformation using the high-pressure torsion method for grain refinement,and (iii) control of strain level for multimodal-structure formation composed of equiaxed nanograins,lamellar coarse grains and fine precipitates.

AB - Despite high strength of nanostructured alloys,they usually exhibit poor uniform ductility. For many applications,it is an important issue to design new nanostructured alloys which have both high strength and high uniform ductility. In this study,an Fe-Ni-Al-C alloy with ultrahigh tensile strength of 1.9-2.2 GPa and high uniform ductility of 16-19% was developed by concurrent employment of several strategies: (i) appropriate choice of chemical compositions for lattice softening,(ii) severe plastic deformation using the high-pressure torsion method for grain refinement,and (iii) control of strain level for multimodal-structure formation composed of equiaxed nanograins,lamellar coarse grains and fine precipitates.

UR - http://www.scopus.com/inward/record.url?scp=84996599838&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84996599838&partnerID=8YFLogxK

U2 - 10.1080/21663831.2015.1050126

DO - 10.1080/21663831.2015.1050126

M3 - Article

AN - SCOPUS:84996599838

VL - 3

SP - 197

EP - 202

JO - Materials Research Letters

JF - Materials Research Letters

SN - 2166-3831

IS - 4

ER -