热处理对E309L-16不锈钢焊条熔敷金属铁素体及力学性能的影响  

Effect of heat treatment on ferrite content and mechanical properties of weld metal by E309L-16 Stainless electrodes

作　　者：袁宁[1] 刘奇望 蒋勇[1] 朱平[2] 王淦刚[2] 赵建仓[2] 孙广 柳猛[3] 

机构地区：[1]四川大西洋焊接材料股份有限公司,自贡市643010 [2]苏州热工研究院有限公司,215004 [3]中广核工程有限公司,深圳市518124

出　　处：《焊接》2013年第12期40-43,70,共4页Welding & Joining

基　　金：广东省产学研结合项目（20110905）.

摘　　要：通过对核岛主设备用E309L-16不锈钢焊条熔敷金属铁素体含量在热处理前后的变化以及对其力学性能的影响研究，结果表明：E309L-16不锈钢焊条熔敷金属焊态下铁素体含量在8％～16．4％范围内时，焊态和610℃×40h热处理态下，随熔敷金属铁素体含量增加，呈现相同的抗拉强度和屈服强度升高、冲击韧性下降的趋势；热处理后呈现铁素体含量降低、盯脆性相增多、抗拉强度升高、屈服强度降低、塑韧性变差的规律；焊态熔敷金属铁索体含量控制在10．4％-12．O％范嗣可保证610℃×40h热处理后铁素体含量、强度和冲击韧性处于良好的范同。The changes of ferrite content before and after heat treatment and its influence on the mechanical properties of weld metal by E309L-16 stainless electrode used in nuclear equipment were studied.The results show that the tensile strength and yield strength increase and impact toughness decrease with the increase of ferrite content between 8%and 16.4%for weld metal of as-welded and as-heat-treated at 610 X.for 40h.The ferrite content decreases,brittle σ phase increases,tensile strength increase,yield strength decreases,plastic deteriorates after post weld heat treatment.Ferrite content,strength and toughness of the 610 ℃×40 h post heated weld metal can be in a good range when the ferrite content of as-welded metal was in the ranee of 10.4%~ 12.0%.

关 键 词：E309L-16熔敷金属热处理铁素体相力学性能 

分 类 号：TG142.71[一般工业技术—材料科学与工程]