CAJ | 학술논문

为匹配室温冲击吸收功高达237 J的低碳低合金高韧性钢Q345LCLA，选择国产焊接材料H10Mn2/SJ101和进口焊接材料Primerweld Ni1K/JF-B分别进行焊接工艺评定。对2种焊接接头进行室温拉伸和侧弯试验，并对焊缝及热影响区在室温，0℃，-20℃和-40℃温度条件下进行冲击试验，同时进行硬度检测及金相组织分析。结果表明，2种焊接材料均具有良好的焊接性，强度、塑性均达到AWSD1.1-2010标准要求，且具有较好的低温及常温冲击韧性，相对而言， Primerweld Ni1K/JF-B的冲击吸收功稍高；2种焊接材料金相组织比较接近，未出现晶粒粗大的魏氏组织及脆硬的马氏体组织，具有良好的金相组织。
위필배실온충격흡수공고체237 J적저탄저합금고인성강Q345LCLA，선택국산한접재료H10Mn2/SJ101화진구한접재료Primerweld Ni1K/JF-B분별진행한접공예평정。대2충한접접두진행실온랍신화측만시험，병대한봉급열영향구재실온，0℃，-20℃화-40℃온도조건하진행충격시험，동시진행경도검측급금상조직분석。결과표명，2충한접재료균구유량호적한접성，강도、소성균체도AWSD1.1-2010표준요구，차구유교호적저온급상온충격인성，상대이언， Primerweld Ni1K/JF-B적충격흡수공초고；2충한접재료금상조직비교접근，미출현정립조대적위씨조직급취경적마씨체조직，구유량호적금상조직。
In order to match Q345LCLA low carbon low alloy high toughness steel, which impact toughness value up to 237J at room temperature, it selected domestic welding materials H10Mn2/SJ101 and imported welding material Primer weld Ni1K/JF-B respectively to conduct welding procedure qualification. The tensile test at room temperature and side-bend test were carried out for 2 kinds of welded joints, impact tests were performed for weld and HAZ at room temperature, 0℃,-20℃and-40℃,at the same time the hardness test and microstructure analysis. The results indicated that 2 kinds of welding material both are with good weldability, the strength and plasticity achieve standard requirements of AWSD1.1-2010, and is with better impact toughness at low temperature and room temperature, relatively speaking, Primer weld Ni1K/JF-B is with higher impact absorbing energy; the microstructure of 2 kinds of welding material is close to, does not appear thick widmanstatten structure or rigid martensitic structure, and is with good metallographic structure.