LONG Hui-guo, CHEN Hong-dong, YANG Xiang-wei. FAILURE ANALYSIS OF 40Mn18Cr4V STEEL BOLT[J]. PHYSICAL TESTING AND CHEMICAL ANALYSIS PART A:PHYSICAL TESTING, 2007, 43(11): 583-586.
Citation:
LONG Hui-guo, CHEN Hong-dong, YANG Xiang-wei. FAILURE ANALYSIS OF 40Mn18Cr4V STEEL BOLT[J]. PHYSICAL TESTING AND CHEMICAL ANALYSIS PART A:PHYSICAL TESTING, 2007, 43(11): 583-586.
LONG Hui-guo, CHEN Hong-dong, YANG Xiang-wei. FAILURE ANALYSIS OF 40Mn18Cr4V STEEL BOLT[J]. PHYSICAL TESTING AND CHEMICAL ANALYSIS PART A:PHYSICAL TESTING, 2007, 43(11): 583-586.
Citation:
LONG Hui-guo, CHEN Hong-dong, YANG Xiang-wei. FAILURE ANALYSIS OF 40Mn18Cr4V STEEL BOLT[J]. PHYSICAL TESTING AND CHEMICAL ANALYSIS PART A:PHYSICAL TESTING, 2007, 43(11): 583-586.
The bolt was ruptured during assembly. The fracture analysis of bolt was carried out by means of microstructure examination and SEM observation. The results showed that,the non-homogeneous distribution of string inclusions and stresses caused axial cracks,which gradually extended till fracture at stress concentration of crack tip under prefastening force and hot expansion action.
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