Shandong Science ›› 2023, Vol. 36 ›› Issue (3): 53-59.doi: 10.3976/j.issn.1002-4026.2023.03.007

• New Materials • Previous Articles     Next Articles

Three-dimensional characterization of inclusions in alloy steel using X-ray micro-CT computer tomo-graphy

SUN Feia,b(), MENG Genglonga, TIAN Linanb, LI Qiumenga, LI Nanb, LIU Longa,b,*()   

  1. a. School of Mechanical & Automotive Engineering, Jinan 250014, China
    b. Engineering Research Center of Failure Analysis and Safety Assessment, Shandong Analysis and Test Center, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250014, China
  • Received:2022-06-27 Online:2023-06-20 Published:2023-06-07

Abstract:

Inclusions have an impact on the fatigue strength and fatigue life of steel, but inclusions in large samples cannot be accurately imaged using X-ray micro computer tomo-graphy(X-ray micro-CT). This study provides a novel approach to obtain the three-dimensional morphology of inclusions in large steel samples. To realize the three-dimensional features of inclusions in large alloy samples, this study used a nonaqueous electrolysis method to obtain inclusions; then scanning electron microscopy was performed to observe and analyze the electrolyzed inclusions.Furthermore, the electrolyzed inclusions were aggregated into cylindrical samples and finally scanned with X-ray micro-CT to obtain their three-dimensional information, and the obtained dimensional data of the inclusions were statistically analyzed.

Key words: inclusions, micro computer tomo-graphy, scanning electron microscopy, nonaqueous electrolysis

CLC Number: 

  • TG142.1