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作者:

Ge, Jinguo (Ge, Jinguo.) | Fan, Ningsong (Fan, Ningsong.) | Long, Yuhong (Long, Yuhong.) | Lin, Jian (Lin, Jian.) | Lei, Yongping (Lei, Yongping.) (学者:雷永平) | Yin, Shuo (Yin, Shuo.)

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EI SCIE

摘要:

In this work, H13 buildups were produced through wire-arc additive manufacturing based on cold metal transfer technology. Four different deposition strategies were employed for the fabrication and the microstructural evolution and mechanical properties of the corresponding buildups were compared. A bimodal microstructure for all buildups produced in the overlap zone (OZ) and body zone (BZ), respectively, despite a mixture of lath-shaped martensites and blocky delta-ferrites in the OZ and a slightly coarser but still fine martensites in the BZ. The as-deposited mechanical properties were evidently superior to the properties of the base metal after annealing, but slightly inferior to that after quenching and tempering. Compared with the components with different deposition patterns between adjacent layers, the relatively enhanced hardness and wear-resistance properties were acquired for the ones with the same scanning strategies, being responsible for the smaller retained delta-ferrite size in the OZ and slightly refined martensites in the BZ. The deposition strategy had a negligible influence on the wear surface hardness, all decreasing gradually from the wear zone to the transient zone and finally keeping stable as a result of the locally martensitic evolution. As the in-situ thermal history was influenced by the deposition strategies, both of the microstructural distribution and mechanical performances were affected by the deposition strategies. Besides, the applied strategies, characterized by the different scanning directions between adjacent tracks, had a negligible influence on microstructures and mechanical properties following comparison with the counterparts with the different directions between adjacent layers. (C) 2020 Published by Elsevier B.V.

关键词:

Deposition strategy H13 blocky buildups Mechanical performances Microstructural evolution Wire arc additive manufacturing

作者机构:

  • [ 1 ] [Ge, Jinguo]Guilin Univ Elect Technol, Sch Mech & Elect Engn, Guilin, Guangxi, Peoples R China
  • [ 2 ] [Long, Yuhong]Guilin Univ Elect Technol, Sch Mech & Elect Engn, Guilin, Guangxi, Peoples R China
  • [ 3 ] [Ge, Jinguo]Beijing Univ Technol, Sch Mat Sci & Engn, Beijing 100124, Peoples R China
  • [ 4 ] [Lin, Jian]Beijing Univ Technol, Sch Mat Sci & Engn, Beijing 100124, Peoples R China
  • [ 5 ] [Lei, Yongping]Beijing Univ Technol, Sch Mat Sci & Engn, Beijing 100124, Peoples R China
  • [ 6 ] [Ge, Jinguo]Univ Dublin, Trinity Coll Dublin, Dept Mech & Mfg Engn, Parsons Bldg, Dublin 2, Ireland
  • [ 7 ] [Fan, Ningsong]Univ Dublin, Trinity Coll Dublin, Dept Mech & Mfg Engn, Parsons Bldg, Dublin 2, Ireland
  • [ 8 ] [Yin, Shuo]Univ Dublin, Trinity Coll Dublin, Dept Mech & Mfg Engn, Parsons Bldg, Dublin 2, Ireland

通讯作者信息:

  • 雷永平

    [Ge, Jinguo]Guilin Univ Elect Technol, Sch Mech & Elect Engn, Guilin, Guangxi, Peoples R China;;[Lei, Yongping]Beijing Univ Technol, Sch Mat Sci & Engn, Beijing 100124, Peoples R China;;[Yin, Shuo]Univ Dublin, Trinity Coll Dublin, Dept Mech & Mfg Engn, Parsons Bldg, Dublin 2, Ireland

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来源 :

JOURNAL OF ALLOYS AND COMPOUNDS

ISSN: 0925-8388

年份: 2021

卷: 860

6 . 2 0 0

JCR@2022

ESI学科: MATERIALS SCIENCE;

ESI高被引阀值:8

被引次数:

WoS核心集被引频次: 11

SCOPUS被引频次: 14

ESI高被引论文在榜: 0 展开所有

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中文被引频次:

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