• 中国科技核心期刊(中国科技论文统计源期刊)

预热温度对U75V激光熔覆成形性能的影响

寇荣魁, 朱加雷, 焦向东, 童佟, 李丛伟

寇荣魁, 朱加雷, 焦向东, 童佟, 李丛伟. 预热温度对U75V激光熔覆成形性能的影响[J]. 焊接, 2021, (10): 29-33. DOI: 10.12073/j.hj.20210713002
引用本文: 寇荣魁, 朱加雷, 焦向东, 童佟, 李丛伟. 预热温度对U75V激光熔覆成形性能的影响[J]. 焊接, 2021, (10): 29-33. DOI: 10.12073/j.hj.20210713002
Kou Rongkui, Zhu Jialei, Jiao Xiangdong, Tong Tong, Li Congwei. Influence of preheating temperature on U75V laser cladding forming performance[J]. WELDING & JOINING, 2021, (10): 29-33. DOI: 10.12073/j.hj.20210713002
Citation: Kou Rongkui, Zhu Jialei, Jiao Xiangdong, Tong Tong, Li Congwei. Influence of preheating temperature on U75V laser cladding forming performance[J]. WELDING & JOINING, 2021, (10): 29-33. DOI: 10.12073/j.hj.20210713002

预热温度对U75V激光熔覆成形性能的影响

基金项目: 

北京石油化工学院京冶新能源技术与装备创新研发中心开放基金(H2019-003/002)

详细信息
    作者简介:

    寇荣魁,1996年出生,硕士;主要从事焊接自动化的研究。

    通讯作者:

    朱加雷,1981年出生,博士,教授

  • 中图分类号: TG456.7

Influence of preheating temperature on U75V laser cladding forming performance

  • 摘要: 研究了预热温度对U75V激光熔覆成形的影响,分析了熔覆层显微组织特征和硬度分布。结果表明,当预热温度低于125 ℃时,熔覆层出现了孔洞和熔深分布不均匀的缺陷,整体尺寸波动较大;125 ℃预热成形的多层熔覆层无明显缺陷。在母材预热后,单层熔覆层熔覆区组织由魏氏组织变化为下贝氏体,热影响区主要为粗晶马氏体,硬度变化较小。多层熔覆层熔覆区组织为柱状晶和等轴晶共存,热影响区的马氏体分布在熔合线附近区域。预热后熔覆层的硬度有所下降,预热对马氏体转变的影响较小。
    Abstract: The effect of preheating temperature on U75V laser cladding forming was studied, and the microstructure and hardness distribution of the cladding layer were analyzed. The results showed that when the preheating temperature was lower than $125^{\circ} \mathrm{C}$, the cladding layer appeared the defects of holes and uneven distribution of penetration depth, and the overall size fluctuated greatly. The multilayer cladding layer preheated at $125^{\circ} \mathrm{C}$ had no obvious defects. After the base material was preheated, the microstructure of the cladding zone in the single-layer cladding layer changed from Widmanstatten to lower bainite, and the heat-affected zone was mainly coarse-grained martensite with little change in hardness. The microstructure of the cladding zone in the multilayer cladding layer was columnar crystals and equiaxed crystals, and the martensite in the heat-affected zone distributed in the area near the fusion line. The hardness of the cladding layer decreased after preheating, and the preheating had little effect on the martensite transformation.
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  • 期刊类型引用(1)

    1. 白咚咚,李霄,朱丽霞,牛辉,贾海东,席敏敏. 层间温度对X80钢管多道环焊接头残余应力的影响. 焊管. 2023(01): 7-12 . 百度学术

    其他类型引用(3)

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出版历程
  • 收稿日期:  2021-07-12

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