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Study on Dynamic Mechanical Properties of Low-Alloy, High-Strength Steel Weld Metal at High Temperatures.

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Title: Study on Dynamic Mechanical Properties of Low-Alloy, High-Strength Steel Weld Metal at High Temperatures.
Authors: Song, Liang1 (AUTHOR) moushangliaoe@163.com, Peng, Yun2 (AUTHOR), Zhao, Haiyan1 (AUTHOR), Cao, Yang2 (AUTHOR), Zhao, Lin2 (AUTHOR)
Source: Materials (1996-1944). Apr2025, Vol. 18 Issue 7, p1488. 19p.
Subjects: Heat resistant alloys, Mechanical properties of metals, Welded joints, High temperature metallurgy, Heat treatment
Abstract: To investigate the dynamic mechanical properties of low-alloy, high-strength steel weld metal at high temperatures, the temperature distribution equation and boundary conditions of weld metal during welding were determined. A steady-state temperature distribution model of weld metal heat loss was constructed by combining the heat loss equation and the heat source loss equation. Subsequently, a weld with Q960E high-strength steel extruded plate was used as the base material to investigate the dynamic mechanical properties of the weld metal at high temperatures. The experimental results show that the weld seam is the weakest region of the whole welded joint, and with the increase in temperature, the yield strength and tensile strength of the welded joints decrease. Heat treatment technology at high temperatures can significantly change the weld tensile strength of Q960E high-strength steel, and solid solution + aging treatment can optimize the mechanical properties of the heat-affected zone. We observed the short-term persistence of high-temperature metal at 600 °C/199 MPa and 650 °C/118 MPa; except for one 118 MPa short-term endurance test at high temperature, most samples qualified. With the increase in annealing temperature from 830 °C, the yield strength and tensile strength of the samples decreased significantly, and elongation after break increased dramatically. [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.)
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DbLabel: Engineering Source
An: 184439880
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PubTypeId: academicJournal
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  Data: Study on Dynamic Mechanical Properties of Low-Alloy, High-Strength Steel Weld Metal at High Temperatures.
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  Data: <searchLink fieldCode="AR" term="%22Song%2C+Liang%22">Song, Liang</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> moushangliaoe@163.com</i><br /><searchLink fieldCode="AR" term="%22Peng%2C+Yun%22">Peng, Yun</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhao%2C+Haiyan%22">Zhao, Haiyan</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Cao%2C+Yang%22">Cao, Yang</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhao%2C+Lin%22">Zhao, Lin</searchLink><relatesTo>2</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Materials+%281996-1944%29%22">Materials (1996-1944)</searchLink>. Apr2025, Vol. 18 Issue 7, p1488. 19p.
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  Data: <searchLink fieldCode="DE" term="%22Heat+resistant+alloys%22">Heat resistant alloys</searchLink><br /><searchLink fieldCode="DE" term="%22Mechanical+properties+of+metals%22">Mechanical properties of metals</searchLink><br /><searchLink fieldCode="DE" term="%22Welded+joints%22">Welded joints</searchLink><br /><searchLink fieldCode="DE" term="%22High+temperature+metallurgy%22">High temperature metallurgy</searchLink><br /><searchLink fieldCode="DE" term="%22Heat+treatment%22">Heat treatment</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: To investigate the dynamic mechanical properties of low-alloy, high-strength steel weld metal at high temperatures, the temperature distribution equation and boundary conditions of weld metal during welding were determined. A steady-state temperature distribution model of weld metal heat loss was constructed by combining the heat loss equation and the heat source loss equation. Subsequently, a weld with Q960E high-strength steel extruded plate was used as the base material to investigate the dynamic mechanical properties of the weld metal at high temperatures. The experimental results show that the weld seam is the weakest region of the whole welded joint, and with the increase in temperature, the yield strength and tensile strength of the welded joints decrease. Heat treatment technology at high temperatures can significantly change the weld tensile strength of Q960E high-strength steel, and solid solution + aging treatment can optimize the mechanical properties of the heat-affected zone. We observed the short-term persistence of high-temperature metal at 600 °C/199 MPa and 650 °C/118 MPa; except for one 118 MPa short-term endurance test at high temperature, most samples qualified. With the increase in annealing temperature from 830 °C, the yield strength and tensile strength of the samples decreased significantly, and elongation after break increased dramatically. [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.)
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RecordInfo BibRecord:
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    Identifiers:
      – Type: doi
        Value: 10.3390/ma18071488
    Languages:
      – Code: eng
        Text: English
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        PageCount: 19
        StartPage: 1488
    Subjects:
      – SubjectFull: Heat resistant alloys
        Type: general
      – SubjectFull: Mechanical properties of metals
        Type: general
      – SubjectFull: Welded joints
        Type: general
      – SubjectFull: High temperature metallurgy
        Type: general
      – SubjectFull: Heat treatment
        Type: general
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      – TitleFull: Study on Dynamic Mechanical Properties of Low-Alloy, High-Strength Steel Weld Metal at High Temperatures.
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            NameFull: Song, Liang
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            NameFull: Peng, Yun
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            NameFull: Zhao, Haiyan
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            NameFull: Cao, Yang
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            – D: 01
              M: 04
              Text: Apr2025
              Type: published
              Y: 2025
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              Value: 18
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