<th id="5nh9l"></th><strike id="5nh9l"></strike><th id="5nh9l"><noframes id="5nh9l"><th id="5nh9l"></th><strike id="5nh9l"></strike>
<progress id="5nh9l"><noframes id="5nh9l"><th id="5nh9l"><noframes id="5nh9l">
<th id="5nh9l"></th> <strike id="5nh9l"><noframes id="5nh9l"><span id="5nh9l"></span>
<progress id="5nh9l"><noframes id="5nh9l"><span id="5nh9l"><noframes id="5nh9l"><span id="5nh9l"></span><strike id="5nh9l"><noframes id="5nh9l"><strike id="5nh9l"></strike>
<span id="5nh9l"><noframes id="5nh9l">
<span id="5nh9l"><noframes id="5nh9l">
<span id="5nh9l"></span><span id="5nh9l"><video id="5nh9l"></video></span>
<th id="5nh9l"><noframes id="5nh9l"><th id="5nh9l"></th>
<progress id="5nh9l"><noframes id="5nh9l">
Volume 8 Issue 3
Nov.  2021
Turn off MathJax
Article Contents
Gao Ruizhen, Chen Huiqing. On the Causes of Cracks of Cast Cu-Ni-Cr-Mn steel[J]. Chinese Journal of Engineering, 1986, 8(3): 6-16. doi: 10.13374/j.issn1001-053x.1986.03.002
Citation: Gao Ruizhen, Chen Huiqing. On the Causes of Cracks of Cast Cu-Ni-Cr-Mn steel[J]. Chinese Journal of Engineering, 1986, 8(3): 6-16. doi: 10.13374/j.issn1001-053x.1986.03.002

On the Causes of Cracks of Cast Cu-Ni-Cr-Mn steel

doi: 10.13374/j.issn1001-053x.1986.03.002
  • Received Date: 1985-09-07
    Available Online: 2021-11-15
  • Cu-Ni-Cr-Mn cast steel is a kind of low alloyed high tensile steel, which is used in ship industry. It often become worthless due to the crack defect. An investigation on the particularity and the causes of crack formation in this steel has been carried out with optical microscope, scanning electric microscope, microprobe and Auger spectroscope. Results show that the crack is a intergranular brittle fracture caused by eutectic phases γ Fe+ (Fe, Cr, Mn) 3C precipiting at the austinite grain boundaries because of solidification microsegregation. With broadening solidification interval and decreasing the partition coefficient, caused by arbon, segregation index Cmax/Cmin of the alloying element, such as Cr. ncrease consequently In presence of sulfur, the segregation index of Cr is increased by sulphide formation. In order to prevent the precipitation ofeUtectic phase and eliminate the crack,the concentration of carbon and sulfurmust be decreased and the increase of cooling rateof castings will be helpful.

     

  • loading
  • 加載中

Catalog

    通訊作者: 陳斌, bchen63@163.com
    • 1. 

      沈陽化工大學材料科學與工程學院 沈陽 110142

    1. 本站搜索
    2. 百度學術搜索
    3. 萬方數據庫搜索
    4. CNKI搜索
    Article views (259) PDF downloads(16) Cited by()
    Proportional views
    Related

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return
    <th id="5nh9l"></th><strike id="5nh9l"></strike><th id="5nh9l"><noframes id="5nh9l"><th id="5nh9l"></th><strike id="5nh9l"></strike>
    <progress id="5nh9l"><noframes id="5nh9l"><th id="5nh9l"><noframes id="5nh9l">
    <th id="5nh9l"></th> <strike id="5nh9l"><noframes id="5nh9l"><span id="5nh9l"></span>
    <progress id="5nh9l"><noframes id="5nh9l"><span id="5nh9l"><noframes id="5nh9l"><span id="5nh9l"></span><strike id="5nh9l"><noframes id="5nh9l"><strike id="5nh9l"></strike>
    <span id="5nh9l"><noframes id="5nh9l">
    <span id="5nh9l"><noframes id="5nh9l">
    <span id="5nh9l"></span><span id="5nh9l"><video id="5nh9l"></video></span>
    <th id="5nh9l"><noframes id="5nh9l"><th id="5nh9l"></th>
    <progress id="5nh9l"><noframes id="5nh9l">
    259luxu-164