Structure and mechanical properties of welded joints of reduced activation austenitic steels
In our work was studed structure,mechanical properties and weld joints reduced activation anstenitic Cr-Mn steels with con rain carbon 0.035,0.1 and 0.25%.Gas-tungsten-arc (GTA) weld joints were made from Cr12Mn20W steels with the carbon content 0.04,0.1 and 0.25% and additions of Ti(0.1%) and B (0.0045). The effects of the temperature,long annealing (LA) and post weld long annealing (PWLA) at 400 and 600℃ up to 5000 h on mechanical properties and impact toughness of the base material (BM),weld material (WM) and weld joints(WJ) were examined.Mechanical properties of weld joints have a sufficiently high level al though they are worse than that of basic material.Fracture of the weld joints as a rule happens throughout the basic metal.Post-weld long annealing (PWLA) practically does not have worsen of the mechanical properties of the weld joints regardless of carbon content in steel. Annealing at 600 ℃/1000 h leads to brittleness of basic metal and welds for all steels.Micrestructure of the base metal (BM),weld metal (WM) and heat affected zone (HAZ) is consided.
M.D.Prusakova E.V.Demina N.A.Vinogradova G.D.Orlova
A.A.Baikov Institute of Metallurgy and Materials Science RAS,Leninskyi pr.49,119991,Moscow GSP1,Russia
国际会议
The 10th China-Russia System on Advanced Materials and Technologies(第十届中俄新材料新工艺研讨会)
浙江嘉兴
英文
145-150
2009-10-20（万方平台首次上网日期，不代表论文的发表时间）