ZHU Jin-bo, FU Zhi-qiang, YAO Jiu-hong. Cracking Analysis of Importation B70 Grade Line Welding Pipe in Cold-bend Test[J]. PHYSICAL TESTING AND CHEMICAL ANALYSIS PART A:PHYSICAL TESTING, 2009, 45(6): 361-363.
Citation:
ZHU Jin-bo, FU Zhi-qiang, YAO Jiu-hong. Cracking Analysis of Importation B70 Grade Line Welding Pipe in Cold-bend Test[J]. PHYSICAL TESTING AND CHEMICAL ANALYSIS PART A:PHYSICAL TESTING, 2009, 45(6): 361-363.
ZHU Jin-bo, FU Zhi-qiang, YAO Jiu-hong. Cracking Analysis of Importation B70 Grade Line Welding Pipe in Cold-bend Test[J]. PHYSICAL TESTING AND CHEMICAL ANALYSIS PART A:PHYSICAL TESTING, 2009, 45(6): 361-363.
Citation:
ZHU Jin-bo, FU Zhi-qiang, YAO Jiu-hong. Cracking Analysis of Importation B70 Grade Line Welding Pipe in Cold-bend Test[J]. PHYSICAL TESTING AND CHEMICAL ANALYSIS PART A:PHYSICAL TESTING, 2009, 45(6): 361-363.
Cracking Analysis of Importation B70 Grade Line Welding Pipe in Cold-bend Test
Metallurgical analysis,fracture analysis and chemical composition analysis were carried out on the B70 grade line welding pipe which cracked during the cold bending test. The results showed that network cementite distributing along the boundary of ferrite grains,inclusions and gas porosities caused the cracking of pipe during the cold bending test.
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