Complex evaluation of porosity in A356 aluminium alloy using advanced porosity module
نویسندگان
چکیده
منابع مشابه
Porosity Prediction in Aluminum A356 Alloy Castings
A comprehensive methodology that takes into account alloy solidification, shrinkage-driven interdendritic fluid flow, hydrogen precipitation, and porosity evolution has been developed for the prediction of microporosity fraction in aluminum A356 alloy castings. The mathematical models presented are implemented in a computational framework consistent with those of commercial casting codes, allow...
متن کاملPorosity Control and Fatigue Behavior in A356-T61 Aluminum Alloy
Much work has been done, in recent years, to characterize the factors that cause porosity in aluminum castings, and to analyze the impact of porosity or microstructural parameters on fatigue life. What has yet to be done is systematically separate out the effects of dendrite arm spacing and largest pore size from each other, and from the underlying chemical and process parameters that influence...
متن کاملMechanisms of the Porosity Formation during the Fiber Laser Lap Welding of Aluminium Alloy
J. Wang, Wuhan Textile University, Wuhan, China C. M. Wang, G. Z. Wang, Huazhong University of Science and Technology, Wuhan, China When joining the aluminum alloys, one of the biggest challenges is the formation of porosity, which deteriorates mechanical properties of welds. In this study, the lap welding was conducted on an aluminum alloy 5754 metal sheets with a thickness of 2 mm. The effect...
متن کاملRefining grain structure and porosity of an aluminium alloy with intensive melt shearing
Intensive melt shearing was achieved using a twin-screw machine to condition an aluminium alloy prior to solidification. The results show that intensive melt shearing has a significant grain-refining effect. In addition, the intensive melt shearing reduces both the volume fraction and the size of porosity. It can reduce the density index from 10.50% to 2.87% and the average size of porosity in ...
متن کاملApplication of Evolution Algorithms to Aluminium Alloy Casting Porosity Prediction Function
Porosity is a major problem occurring in aluminium alloy casting. During the process of solidification, alloy would shrink and emit dissolving hydrogen causing porosity formation inside the solidified part which leads to mechanical properties degradation. This research aims to produce a formula to explain the resulting porosity with the initial chemical compositions and cooling rate. A mathemat...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Manufacturing Technology
سال: 2013
ISSN: 1213-2489,1213-2489
DOI: 10.21062/ujep/x.2013/a/1213-2489/mt/13/1/26