Abstract:Many cracks appeared during the post-processing of the heat production of HPb59-1 lead brass valve.The fracture mechanism of HPb59-1 lead brass valve was investigated by metallography and electron pro...Many cracks appeared during the post-processing of the heat production of HPb59-1 lead brass valve.The fracture mechanism of HPb59-1 lead brass valve was investigated by metallography and electron probe.It was found that the content of lead was higher than that as required in lead brass valve.The microstructure of lead brass valve is inhomogeneous and the crystal grain size was big.Much corrosion products which were rich in lead element were found at the surface of cracks,and the enrichment region of Pb and S elements also occurred,indicating that the forging-process was improper,the annealing was insufficient and corrosion products appearing,thus leading to stress corrosion crack in lead brass valve.Read More
Publication Year: 2009
Publication Date: 2009-01-01
Language: en
Type: article
Access and Citation
AI Researcher Chatbot
Get quick answers to your questions about the article from our AI researcher chatbot