Volume 31 Issue 6
Mar.  2024
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YANG Xiao, ZHANG Mingsheng. Analysis on Fracture of Grade 8.8 Bolts[J]. Development and Application of Materials, 2016, 31(6): 17-21. DOI: 10.19515/j.cnki.1003-1545.2016.06.004
Citation: YANG Xiao, ZHANG Mingsheng. Analysis on Fracture of Grade 8.8 Bolts[J]. Development and Application of Materials, 2016, 31(6): 17-21. DOI: 10.19515/j.cnki.1003-1545.2016.06.004
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Analysis on Fracture of Grade 8.8 Bolts

  • 1. Luoyang Ship Material Research Institute, Luoyang 471023, China;

  • 2. CRRC Luoyang CO., LTD., Luoyang 471002, China

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  • Received Date: May 23, 2016
  • Available Online: March 29, 2024
    Graphical Abstract
    • Abstract
  • The grade 8. 8 bolts cracked in assembling process. Chemical compositions analysis,mechanical test,fracture morphology observation and microstructure analysis were performed to analyze the cracking of grade 8. 8 bolts in assembling process. The results show that the bolts cracked because of fatigue,and the main reason that the decarburized layer on the surface of the bolts reduced the fatigue property.
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