Enhanced hardening by multiple microalloying in low carbon ferritic steels with interphase precipitation

Yongjie Zhang; Goro Miyamoto; Tadashi Furuhara

doi:10.1016/j.scriptamat.2022.114558

Enhanced hardening by multiple microalloying in low carbon ferritic steels with interphase precipitation

Yongjie Zhang, Goro Miyamoto, Tadashi Furuhara

Materials Design Division

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

2 Citations (Scopus)

Abstract

The interphase precipitation behaviors and resultant hardening in V-microalloyed low carbon steels combined with Nb or Ti addition were investigated. After isothermal transformation at 923 K, alloy carbide is formed by simultaneous interphase precipitation of carbide-forming elements, with the enrichment of Nb or Ti rather than V at the early stage due to their larger driving force for precipitation. When compared at the same total amount of microalloying addition, both number density and size of alloy carbide, as well as resultant hardness of ferrite in the multiple-added alloys are in between those of the single-added counterparts. The advantage of multiple microalloying of elements with different carbide-forming tendency is summarized to be the co-establishment of high number density and large volume fraction of alloy carbide with acceptable austenitizing temperature required for complete dissolution of the added carbide-forming elements.

Original language	English
Article number	114558
Journal	Scripta Materialia
Volume	212
DOIs	https://doi.org/10.1016/j.scriptamat.2022.114558
Publication status	Published - 2022 Apr 15

Keywords

Atom probe tomography
High strength steel
Interphase precipitation
Microalloying
Precipitation hardening

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering
Metals and Alloys

Access to Document

10.1016/j.scriptamat.2022.114558

Cite this

@article{7bb087d44ab2421e923a2bb079e16ec8,

title = "Enhanced hardening by multiple microalloying in low carbon ferritic steels with interphase precipitation",

abstract = "The interphase precipitation behaviors and resultant hardening in V-microalloyed low carbon steels combined with Nb or Ti addition were investigated. After isothermal transformation at 923 K, alloy carbide is formed by simultaneous interphase precipitation of carbide-forming elements, with the enrichment of Nb or Ti rather than V at the early stage due to their larger driving force for precipitation. When compared at the same total amount of microalloying addition, both number density and size of alloy carbide, as well as resultant hardness of ferrite in the multiple-added alloys are in between those of the single-added counterparts. The advantage of multiple microalloying of elements with different carbide-forming tendency is summarized to be the co-establishment of high number density and large volume fraction of alloy carbide with acceptable austenitizing temperature required for complete dissolution of the added carbide-forming elements.",

keywords = "Atom probe tomography, High strength steel, Interphase precipitation, Microalloying, Precipitation hardening",

author = "Yongjie Zhang and Goro Miyamoto and Tadashi Furuhara",

note = "Funding Information: This work was financially supported by Core Research for Evolutional Science and Technology (CREST) Basic Research Program entitled {\textquoteleft}{\textquoteleft}Creation of Innovative Functions of Intelligent Materials on the Basis of Element Strategy{\textquoteright}{\textquoteright} funded by Japan Science and Technology Agency (JST) (2011–2015), Grant-in-Aid for JSPS Fellows No. 14J02944 (2014–2016) and Grant-in-Aid for Scientific Research (A) No. 17H01330 (2017–2019) funded by Japan Society for the Promotion of Science (JSPS). Y.J.Z. acknowledges the Iron and Steel Institute of Japan for Research Promotion Grant (2019–2020). The authors are grateful to Mr. Kunio Shinbo in Institute for Materials Research, Tohoku University, for his technical support in 3DAP measurements. Publisher Copyright: {\textcopyright} 2022 Acta Materialia Inc.",

year = "2022",

month = apr,

day = "15",

doi = "10.1016/j.scriptamat.2022.114558",

language = "English",

volume = "212",

journal = "Scripta Materialia",

issn = "1359-6462",

publisher = "Elsevier Limited",

}

TY - JOUR

T1 - Enhanced hardening by multiple microalloying in low carbon ferritic steels with interphase precipitation

AU - Zhang, Yongjie

AU - Miyamoto, Goro

AU - Furuhara, Tadashi

N1 - Funding Information: This work was financially supported by Core Research for Evolutional Science and Technology (CREST) Basic Research Program entitled ‘‘Creation of Innovative Functions of Intelligent Materials on the Basis of Element Strategy’’ funded by Japan Science and Technology Agency (JST) (2011–2015), Grant-in-Aid for JSPS Fellows No. 14J02944 (2014–2016) and Grant-in-Aid for Scientific Research (A) No. 17H01330 (2017–2019) funded by Japan Society for the Promotion of Science (JSPS). Y.J.Z. acknowledges the Iron and Steel Institute of Japan for Research Promotion Grant (2019–2020). The authors are grateful to Mr. Kunio Shinbo in Institute for Materials Research, Tohoku University, for his technical support in 3DAP measurements. Publisher Copyright: © 2022 Acta Materialia Inc.

PY - 2022/4/15

Y1 - 2022/4/15

N2 - The interphase precipitation behaviors and resultant hardening in V-microalloyed low carbon steels combined with Nb or Ti addition were investigated. After isothermal transformation at 923 K, alloy carbide is formed by simultaneous interphase precipitation of carbide-forming elements, with the enrichment of Nb or Ti rather than V at the early stage due to their larger driving force for precipitation. When compared at the same total amount of microalloying addition, both number density and size of alloy carbide, as well as resultant hardness of ferrite in the multiple-added alloys are in between those of the single-added counterparts. The advantage of multiple microalloying of elements with different carbide-forming tendency is summarized to be the co-establishment of high number density and large volume fraction of alloy carbide with acceptable austenitizing temperature required for complete dissolution of the added carbide-forming elements.

AB - The interphase precipitation behaviors and resultant hardening in V-microalloyed low carbon steels combined with Nb or Ti addition were investigated. After isothermal transformation at 923 K, alloy carbide is formed by simultaneous interphase precipitation of carbide-forming elements, with the enrichment of Nb or Ti rather than V at the early stage due to their larger driving force for precipitation. When compared at the same total amount of microalloying addition, both number density and size of alloy carbide, as well as resultant hardness of ferrite in the multiple-added alloys are in between those of the single-added counterparts. The advantage of multiple microalloying of elements with different carbide-forming tendency is summarized to be the co-establishment of high number density and large volume fraction of alloy carbide with acceptable austenitizing temperature required for complete dissolution of the added carbide-forming elements.

KW - Atom probe tomography

KW - High strength steel

KW - Interphase precipitation

KW - Microalloying

KW - Precipitation hardening

UR - http://www.scopus.com/inward/record.url?scp=85123690514&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85123690514&partnerID=8YFLogxK

U2 - 10.1016/j.scriptamat.2022.114558

DO - 10.1016/j.scriptamat.2022.114558

M3 - Article

AN - SCOPUS:85123690514

SN - 1359-6462

VL - 212

JO - Scripta Materialia

JF - Scripta Materialia

M1 - 114558

ER -

Enhanced hardening by multiple microalloying in low carbon ferritic steels with interphase precipitation

Abstract

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this