Acicular ferrite nucleation mechanism in laser-MAG hybrid welds of X100 pipeline steel
Acicular ferrite nucleation mechanism in laser-MAG hybrid welds of X100 pipeline steel
复制标题
X100管线钢激光-MAG复合焊缝针状铁素体形核机制
DOI:
10.1016/j.matlet.2021.130603
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发表时间:
2021-12
影响因子:
3
通讯作者:
Long Chen
中科院分区:
文献类型:
--
作者:
Xiaonan Qi;Xiaonan Wang;Hongshuang Di;Xinjunshen;Pengcheng Huan;Jingrui He;Long Chen
Acicular ferrite nucleation mechanism in laser-MAG hybrid welding of X100 pipeline steel is studied in this paper. The experimental results show that the inclusions are mainly composed of Ti2O3and Al2O3in the weld, which induce the nucleation of acicular ferrite. There is Mn-depleted zone (MDZ) near the inclusions. Therefore, MDZ mechanism is responsible for the acicular ferrite nucleation in the laser-MAG hybrid weld of X100 pipeline steel. In addition, inclusions should contain a high mole fraction of Ti2O3in order to form MDZ and consequentially induce acicular ferrite nucleation.
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DOI:
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Journal of Materials Research and Technology
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