SM490B 钢焊接接头低温断裂韧性实验研究  

Experment and Study of Fracture Toughness of Steel SM490 at Low Temperature

作　　者：常莉莉[1] 马永忠[1] 刘渭祈 

机构地区：[1]太原重型机械学院

出　　处：《太原重型机械学院学报》1998年第4期350-356,共7页Journal of Taiyuan Heavy Machinery Institute

摘　　要：用多试样法则测定了ＳＭ４９０Ｂ钢焊接接头，在－２０℃及－４０℃下焊缝金属、母材、及热影响区以ＣＯＤ表示的裂纹扩展阻力曲线，得到了该焊接接头的表观开裂ＣＯＤ（δｉ），条件开裂ＣＯＤ（δ０．０５），为使用者提供了断裂韧性数据。In this paper,welded joints of steel Sm490 were measured by means of many specimen method.The crack expanding resistance curves of weld metal.base metal and heat affeccted Zone have been determined at both -20℃and -40℃,which were described with COD.In addition,the initial toughness COD(δ i) and Conditional toughness COD (δ 0.05 ) of its welded joints have been obtained.The data of fracture toughness will be presented for the user. [WT4”HZ〗

关 键 词：断裂韧性 裂纹 焊接接头 钢 焊接 

分 类 号：TG407[金属学及工艺—焊接]