Cryogenic Toughness of 10Ni3MoVD Steel Forging
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摘要: 将10Ni3MoVD钢锭按锻造比大于3.5锻造成钢板并进行调质热处理，研究了其显微组织、拉伸性能和低温韧性。结果表明：试验钢的显微组织主要由回火索氏体和贝氏体组成，不同厚度位置的晶粒度均不低于9.5级；试验钢的拉伸性能满足NB/T 47009-2017标准中的指标要求；在-50℃下，试验钢的冲击韧性优良，总冲击吸收能量不低于176 J，晶状断面率低于20%，侧膨胀值大于2.25 mm，表层及1/4厚度位置的无塑性转变温度分别为-75，-65℃。
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关键词:
- 10Ni3MoVD钢锻件 /
- 拉伸性能 /
- 低温韧性
Abstract: 10Ni3MoVD steel ingot was forged to steel plate at a forging ratio greater than 3.5, and then treated by quenching-tempering heat treatment. The microstructure, tensile properties and cryogenic toughness of the steel were studied. The results show that the microstructure of the tested steel was mainly composed of tempered sorbite and bainite. The grain size at differernt thickness positions was not lower than grade 9.5. The tensile properties of the tested steel met the requirements of the NB/T 47009-2017 standard. At -50℃, the tested steel had an excellent impact toughness; the total impact obsorbed energy was not lower than 176 J, the percentage of crystallinity was lower than 20%, the lateral expansion was greater than 2.25 mm and the nil-ductility transition temperatures of the surface layer and at 1/4 thickness position were -75, -65℃, respectively.-
Keywords:
- 10Ni3MoVD steel forging /
- tensile property /
- cryogenic toughness
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[1] 钟宇澄. 低温压力容器大锻件生产的研究[J]. 石油化工设备,1986,15(1):27-32. [2] 张勇. 低温压力容器用钢的现状与发展概况[J]. 压力容器,2006,23(4):31-34. [3] 窦万波. 我国乙烯球罐现状及国产化中技术要点分析[J]. 压力容器,2006,23(6):39-42. [4] 张一任,陈辉华. 10Ni3MoVD锻件的焊接性试验[J]. 电焊机,2014,44(1):19-22. [5] 章小浒,杨国义,陈志伟. 承压设备用钢锻件标准的浅析[J]. 压力容器,2011,28(3):55-60. [6] 窦万波. 特大型天然气球罐用WEL-TEN610CF钢板的冲击与断裂性能[J]. 机械工程材料,2007,31(6):59-62. [7] 吕炎. 锻件中的常见缺陷与预防[M]. 北京:机械工业出版社,1999. [8] 黄维,高真凤,张志勤. Ni系低温钢现状及发展方向[J]. 鞍钢技术,2013(1):10-14. [9] 陈勇. 应变强化奥氏体不锈钢的低温冲击韧性[J]. 机械工程材料,2015,39(6):73-78.
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