Crack Resistance and Structural Analysis on Thermit Welding
War-broken parts can be repaired quickly without electricity and gas in the wild by use of the thermit welding technology, so it is of great significance to study on welded quality of thermit welding parts for its military application. As the crack resistance of welded parts is an important target to estimate the welded performance, crack resistance test and microstructure analysis have been conducted on test specimens made of Q235 welded parts. Results showed that as the crack ratio was less than 20% in the Y-groove crack test, the crack propagation would not occur in the practical welding structure and that the crack resistance of welded joints could meet the welded demand.
Zhong Cao, Xueqiang Cao, Lixian Sun, Yinghe He
B. He and C. Q. Sun, "Crack Resistance and Structural Analysis on Thermit Welding", Advanced Materials Research, Vols. 239-242, pp. 2440-2443, 2011