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刘露, 王加友, 李大用, 张广军. 10Ni5CrMoV钢错位同步双面双弧焊接接头抗低温脆断性能[J]. 焊接学报, 2016, 37(8): 109-113.
引用本文: 刘露, 王加友, 李大用, 张广军. 10Ni5CrMoV钢错位同步双面双弧焊接接头抗低温脆断性能[J]. 焊接学报, 2016, 37(8): 109-113.
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LIU Lu, WANG Jiayou, LI Dayong, ZHANG Guangjun. Low temperature brittle fracture resistance of asymmetrical synchronous double-sided arc welded joint of 10Ni5CrMoV steel[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2016, 37(8): 109-113.
Citation: LIU Lu, WANG Jiayou, LI Dayong, ZHANG Guangjun. Low temperature brittle fracture resistance of asymmetrical synchronous double-sided arc welded joint of 10Ni5CrMoV steel[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2016, 37(8): 109-113.
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10Ni5CrMoV钢错位同步双面双弧焊接接头抗低温脆断性能

Low temperature brittle fracture resistance of asymmetrical synchronous double-sided arc welded joint of 10Ni5CrMoV steel

    摘要
  • 摘要: 文中采用系列温度冲击试验、动态撕裂（Dynamic Tear, DT）试验和落锤试验研究了10Ni5CrMoV钢错位同步双面双弧焊接接头的抗低温脆断性能.结果表明，10Ni5CrMoV钢双面双弧焊接接头抗脆性转变能力满足服役要求.双面双弧焊接接头的熔合线位置的冲击吸收功满足10Ni5CrMoV钢焊接接头Akv（-50℃）≥47 J的技术指标要求，且余量较大；-1℃时焊接接头动态撕裂能最低值为1 150 J，高于配套焊接材料0℃时DT功大于644 J的要求；落锤试验确定10Ni5CrMoV钢焊缝金属无塑性转变温度（Nil-Ductility Temperature）为-80℃，焊缝的弹性断裂转变温度Fracture Transtiton of Elastic（FTE）为-47℃，全塑性断裂转变温度Farcture Transition Temperature（FTP）为-14℃.

     

    Abstract: Low temperature brittle fracture resistance of asymmetrical synchronous double-sided arc welded (DSAW) joint of 10Ni5CrMoV steel was investigated by series temperature impact test, dynamic tear test and drop hammer test. The results show that DSAW joints of steel 10Ni5CrMoV have a practicable brittle fracture resistance. The impact energy value on the fusion line of DSAW joint meets the technical requirement of the 10Ni5CrMoV steel (i.e., Akv(-50℃≥47 J) with a large allowance. Minimum of dynamic tearing energy at -1℃ is 1150 J, higher than the standard of 644 J DT work at 0℃. Drop hammer test determines that the nil-ductility transition temperature of weld metal of 10Ni5CrMoV steel is -80℃, elastic fracture transition temperature is -47℃, full plastic fracture transition temperature is -14℃.

     

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