Please use this identifier to cite or link to this item:
http://hdl.handle.net/10397/106427
DC Field | Value | Language |
---|---|---|
dc.contributor | Department of Mechanical Engineering | - |
dc.creator | Kong, HJ | en_US |
dc.creator | Xu, C | en_US |
dc.creator | Bu, CC | en_US |
dc.creator | Da, C | en_US |
dc.creator | Luan, JH | en_US |
dc.creator | Jiao, ZB | en_US |
dc.creator | Chen, G | en_US |
dc.creator | Liu, CT | en_US |
dc.date.accessioned | 2024-05-09T00:53:28Z | - |
dc.date.available | 2024-05-09T00:53:28Z | - |
dc.identifier.issn | 1359-6454 | en_US |
dc.identifier.uri | http://hdl.handle.net/10397/106427 | - |
dc.language.iso | en | en_US |
dc.publisher | Elsevier Ltd | en_US |
dc.rights | © 2019 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved. | en_US |
dc.rights | © 2019. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/. | en_US |
dc.rights | The following publication Kong, H. J., Xu, C., Bu, C. C., Da, C., Luan, J. H., Jiao, Z. B., ... & Liu, C. T. (2019). Hardening mechanisms and impact toughening of a high-strength steel containing low Ni and Cu additions. Acta Materialia, 172, 150-160 is available at https://doi.org/10.1016/j.actamat.2019.04.041. | en_US |
dc.subject | Cu-rich nanocluster-strengthened high-strength low alloy (HSLA) steel | en_US |
dc.subject | Dislocation-precipitate interactions | en_US |
dc.subject | Impact toughening | en_US |
dc.subject | Multiple strengthening mechanisms | en_US |
dc.subject | Temper-embrittlement | en_US |
dc.title | Hardening mechanisms and impact toughening of a high-strength steel containing low Ni and Cu additions | en_US |
dc.type | Journal/Magazine Article | en_US |
dc.identifier.spage | 150 | en_US |
dc.identifier.epage | 160 | en_US |
dc.identifier.volume | 172 | en_US |
dc.identifier.doi | 10.1016/j.actamat.2019.04.041 | en_US |
dcterms.abstract | Aging treatments at 400–550 °C are commonly used to attain a peak strengthening for the Cu-rich nanocluster-strengthened high-strength low-alloy (HSLA) steels. However, these temperatures fall within the dangerous 300–600 °C temper-embrittlement regime, leading to poor impact toughness. On the other hand, aging at temperatures above the embrittlement regime can improve the impact toughness but at a great expense of strength. In this work, the strengthening mechanisms as well as the toughening of a low cost weldable HSLA steel with a low content of carbon (C ∼0.08 wt.%), nickel (Ni = 0.78 wt.%), and copper (Cu = 1.3 wt.%) were carefully investigated. Our findings show that the low-C-Ni-Cu HSLA steel is insensitive to the aging temperatures and can achieve a yield strength (YS) and ultimate tensile strength (UTS) over 1000 and 1100 MPa, respectively, with tensile ductility >10% (reduction of area >60%) at a heat-treat temperature of 640 °C through multiple strengthening mechanisms. Besides, a good low-temperature (−40 °C) impact performance (∼200 J) with high YS (∼900 MPa) and UTS (∼1000 MPa) can be obtained by seeking a strength balance among the fine grain size (∼2.5 μm), medium-sized (∼14 nm) overaged Cu-rich precipitates, tempered martensite, and fresh martensite (or carbides). Moreover, a relatively lower YS (∼800 MPa) and UTS (∼900 MPa) useful for steel manufacturing can be attained by a prolonged aging at 640 °C. In addition, the dislocation-precipitate interactions were also explored based on the dislocation theories in this study. | - |
dcterms.accessRights | open access | en_US |
dcterms.bibliographicCitation | Acta materialia, 15 June 2019, v. 172, p. 150-160 | en_US |
dcterms.isPartOf | Acta materialia | en_US |
dcterms.issued | 2019-06 | - |
dc.identifier.scopus | 2-s2.0-85065095818 | - |
dc.identifier.eissn | 1873-2453 | en_US |
dc.description.validate | 202405 bcch | - |
dc.description.oa | Accepted Manuscript | en_US |
dc.identifier.FolderNumber | ME-0439 | - |
dc.description.fundingSource | RGC | en_US |
dc.description.fundingSource | Others | en_US |
dc.description.fundingText | National Natural Science Foundation of China | en_US |
dc.description.pubStatus | Published | en_US |
dc.identifier.OPUS | 21627052 | - |
dc.description.oaCategory | Green (AAM) | en_US |
Appears in Collections: | Journal/Magazine Article |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
Jiao_Hardening_Mechanisms_Impact.pdf | Pre-Published version | 1.91 MB | Adobe PDF | View/Open |
Page views
7
Citations as of Jun 30, 2024
Downloads
1
Citations as of Jun 30, 2024
SCOPUSTM
Citations
75
Citations as of Jul 4, 2024
WEB OF SCIENCETM
Citations
67
Citations as of Jul 4, 2024
![](/image/google_scholar.jpg)
Google ScholarTM
Check
Altmetric
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.