Analysis on Cracking of Bend in Pressure Dissolution Zone of An Aluminum Plant
For short time cracking of bend in pressure dissolution zone of an aluminum plant,the macroscopic and microscopic morphologies test of the crack were analyzed,and the chemical composition analysis,microstructure observation,hardness and tensile property test of the bend material were carried out.The results show that the crack mainly propagates along the grain boundary,and the corrosion trace on the fracture surface is obvious,which is a typical alkali brittle cracking.The chemical composition of the bend body meets the requirements of Q345E,and the microstructure is tempered martensite.The improper supply state of the failed bend is the main reason of abnormal mechanical properties,stress state and short time alkali brittle fracture of the bend body.
万方数据
维普
