View in EDS HTML Full Text PDF Full Text

Ultra-Low-Temperature Tensile Fracture Mechanism of 500 MPa Duplex Steel Bar.

Saved in:
Bibliographic Details
Title: Ultra-Low-Temperature Tensile Fracture Mechanism of 500 MPa Duplex Steel Bar.
Authors: Ma, Zhenghong1,2 (AUTHOR), Cao, Jun1,2 (AUTHOR), Zhang, Huanhuan1,3 (AUTHOR) bingoliu@126.com, Yin, Shubiao1 (AUTHOR) zhangzhibo100@126.com, Liu, Bingguo1,2 (AUTHOR), Zhang, Zhibo3 (AUTHOR)
Source: Materials (1996-1944). May2025, Vol. 18 Issue 10, p2288. 27p.
Subjects: Steel bars, Core materials, Ductile fractures, Steel mills, Manufacturing processes
Abstract: In the field of low-temperature-resistant steel bars in the liquefied natural gas (LNG) ultra-low-temperature environment, matching the strength and toughness of the material has become a key technical difficulty. In this paper, a duplex low-temperature-resistant steel bar was developed and designed, which adopts a continuous water-penetrating rolling process and a self-tempering process to effectively control the microstructure proportion of it at room temperature and effectively cope with ultra-low-temperature tensile failure at −163 °C. We studied the failure mechanism of 500 MPa steel grade low-temperature-resistant steel bars at tensile temperatures from 25 °C to −163 °C. We define a mixed microstructure of ferrite and pearlite (F + P) as the core of the material and tempered martensitic (TM) as the border of the material. It was found that the core and border microstructure had different response characteristics at different tensile temperatures. It is proved that, through the duplex microstructure design, it can meet the design requirements for the 500 MPa steel grade of low-temperature-resistant steel bars. By clarifying the effects of microstructure deformation, dislocation distribution, precipitated phase, and inclusions on the low-temperature resistance of steel bars under low-temperature tensile fracture, the deformation models of core and border microstructure under different tensile temperatures were constructed, and the methods for optimizing the production process of subsequent steel mills were given. After the optimization, the low-temperature toughness of the 500 MPa steel grade steel bar will be further guaranteed. [ABSTRACT FROM AUTHOR]
Copyright of Materials (1996-1944) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
Full text is not displayed to guests.
FullText Links:
  – Type: pdflink
Text:
  Availability: 1
Header DbId: egs
DbLabel: Engineering Source
An: 185475261
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
IllustrationInfo
Items – Name: Title
  Label: Title
  Group: Ti
  Data: Ultra-Low-Temperature Tensile Fracture Mechanism of 500 MPa Duplex Steel Bar.
– Name: Author
  Label: Authors
  Group: Au
  Data: <searchLink fieldCode="AR" term="%22Ma%2C+Zhenghong%22">Ma, Zhenghong</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Cao%2C+Jun%22">Cao, Jun</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhang%2C+Huanhuan%22">Zhang, Huanhuan</searchLink><relatesTo>1,3</relatesTo> (AUTHOR)<i> bingoliu@126.com</i><br /><searchLink fieldCode="AR" term="%22Yin%2C+Shubiao%22">Yin, Shubiao</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> zhangzhibo100@126.com</i><br /><searchLink fieldCode="AR" term="%22Liu%2C+Bingguo%22">Liu, Bingguo</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhang%2C+Zhibo%22">Zhang, Zhibo</searchLink><relatesTo>3</relatesTo> (AUTHOR)
– Name: TitleSource
  Label: Source
  Group: Src
  Data: <searchLink fieldCode="JN" term="%22Materials+%281996-1944%29%22">Materials (1996-1944)</searchLink>. May2025, Vol. 18 Issue 10, p2288. 27p.
– Name: Subject
  Label: Subjects
  Group: Su
  Data: <searchLink fieldCode="DE" term="%22Steel+bars%22">Steel bars</searchLink><br /><searchLink fieldCode="DE" term="%22Core+materials%22">Core materials</searchLink><br /><searchLink fieldCode="DE" term="%22Ductile+fractures%22">Ductile fractures</searchLink><br /><searchLink fieldCode="DE" term="%22Steel+mills%22">Steel mills</searchLink><br /><searchLink fieldCode="DE" term="%22Manufacturing+processes%22">Manufacturing processes</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: In the field of low-temperature-resistant steel bars in the liquefied natural gas (LNG) ultra-low-temperature environment, matching the strength and toughness of the material has become a key technical difficulty. In this paper, a duplex low-temperature-resistant steel bar was developed and designed, which adopts a continuous water-penetrating rolling process and a self-tempering process to effectively control the microstructure proportion of it at room temperature and effectively cope with ultra-low-temperature tensile failure at −163 °C. We studied the failure mechanism of 500 MPa steel grade low-temperature-resistant steel bars at tensile temperatures from 25 °C to −163 °C. We define a mixed microstructure of ferrite and pearlite (F + P) as the core of the material and tempered martensitic (TM) as the border of the material. It was found that the core and border microstructure had different response characteristics at different tensile temperatures. It is proved that, through the duplex microstructure design, it can meet the design requirements for the 500 MPa steel grade of low-temperature-resistant steel bars. By clarifying the effects of microstructure deformation, dislocation distribution, precipitated phase, and inclusions on the low-temperature resistance of steel bars under low-temperature tensile fracture, the deformation models of core and border microstructure under different tensile temperatures were constructed, and the methods for optimizing the production process of subsequent steel mills were given. After the optimization, the low-temperature toughness of the 500 MPa steel grade steel bar will be further guaranteed. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Materials (1996-1944) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
PLink https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=egs&AN=185475261
RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.3390/ma18102288
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 27
        StartPage: 2288
    Subjects:
      – SubjectFull: Steel bars
        Type: general
      – SubjectFull: Core materials
        Type: general
      – SubjectFull: Ductile fractures
        Type: general
      – SubjectFull: Steel mills
        Type: general
      – SubjectFull: Manufacturing processes
        Type: general
    Titles:
      – TitleFull: Ultra-Low-Temperature Tensile Fracture Mechanism of 500 MPa Duplex Steel Bar.
        Type: main
  BibRelationships:
    HasContributorRelationships:
      – PersonEntity:
          Name:
            NameFull: Ma, Zhenghong
      – PersonEntity:
          Name:
            NameFull: Cao, Jun
      – PersonEntity:
          Name:
            NameFull: Zhang, Huanhuan
      – PersonEntity:
          Name:
            NameFull: Yin, Shubiao
      – PersonEntity:
          Name:
            NameFull: Liu, Bingguo
      – PersonEntity:
          Name:
            NameFull: Zhang, Zhibo
    IsPartOfRelationships:
      – BibEntity:
          Dates:
            – D: 15
              M: 05
              Text: May2025
              Type: published
              Y: 2025
          Identifiers:
            – Type: issn-print
              Value: 19961944
          Numbering:
            – Type: volume
              Value: 18
            – Type: issue
              Value: 10
          Titles:
            – TitleFull: Materials (1996-1944)
              Type: main
ResultId 1