出版社：National Defense University Barbaros Naval Sciences and Engineering Institute Journal of Naval Science and Engineering
摘要：Beside the fact that austenitic stainless steels are used in various industrial applications,they are also widely used in naval applications.Especially,in shipbuilding sector,construction of corrugates and corrugate supports of tankers,chemical tankers,non-magnetic ships which are supposed to be working in polar areas and in construction of some naval war ships,as well as in piping systems of those,the need of having welded structures of non-magnetic stainless material has been increased.Within this scope,the prediction of the distortions of welded joints of austenitic stainless steel becomes more important and comes forward among the others.Most stainless steels are considered to have good weldability and may be welded by several processes including the arc welding processes,resistance welding,electron and laser beam welding,friction welding and brazing.For any of these processes,joint surfaces and any filler material must be clean.The coefficient of thermal expansion for the austenitic types is 50 % greater than that of carbon steel and this must be considered to minimize distortion.The low thermal and electrical conductivity of austenitic stainless steel is generally helpful in welding.Less welding heat is required to make a weld because the heat is not conducted away from a joint as rapidly as in carbon steel.In resistance welding,lower current can be used because resistivity is higher.
关键词：FEM: Finite Element Method;SMAW: Shielded Metal Arc Welding;GMAW: Gas Metal Arc Welding;MIG: Metal Inert Gas;Austenitic Stainless Steel;Welding Deformations
