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粉末床激光熔化成形H13钢工艺优化及力学性能研究

舒雷 张正文 刘丽君 毛胜兰

舒雷,张正文,刘丽君, 等. 粉末床激光熔化成形H13钢工艺优化及力学性能研究[J]. 机械科学与技术,2022,41(12):1914-1920 doi: 10.13433/j.cnki.1003-8728.20200540
引用本文: 舒雷,张正文,刘丽君, 等. 粉末床激光熔化成形H13钢工艺优化及力学性能研究[J]. 机械科学与技术,2022,41(12):1914-1920 doi: 10.13433/j.cnki.1003-8728.20200540
SHU Lei, ZHANG Zhengwen, LIU Lijun, MAO Shenglan. Study on Process Optimization and Mechanical Properties of H13 Steelformed with Laser-powder Bed Fusion[J]. Mechanical Science and Technology for Aerospace Engineering, 2022, 41(12): 1914-1920. doi: 10.13433/j.cnki.1003-8728.20200540
Citation: SHU Lei, ZHANG Zhengwen, LIU Lijun, MAO Shenglan. Study on Process Optimization and Mechanical Properties of H13 Steelformed with Laser-powder Bed Fusion[J]. Mechanical Science and Technology for Aerospace Engineering, 2022, 41(12): 1914-1920. doi: 10.13433/j.cnki.1003-8728.20200540

粉末床激光熔化成形H13钢工艺优化及力学性能研究

doi: 10.13433/j.cnki.1003-8728.20200540
基金项目: 重庆市自然科学基金重点项目(cstc2020jcyj-zdxmX0021)
详细信息
    作者简介:

    舒雷(1997−),硕士研究生,研究方向为金属增材制造,shu_lei97@163.com

    通讯作者:

    张正文,教授,博士生导师,zhangzw@cqu.edu.cn

  • 中图分类号: TB31

Study on Process Optimization and Mechanical Properties of H13 Steelformed with Laser-powder Bed Fusion

  • 摘要: 通过实验方法优化得到了粉末床激光熔化成形H13钢的工艺参数,并研究了成形样件的微观组织和拉伸性能。通过实验得到了H13钢单道成形的优化工艺区间:激光功率225 ~ 325 W,扫描速度600 ~1200 mm/s,通过块体实验得到优化的工艺参数为:激光功率275 W,扫描速度900 mm/s,扫描间距0.08 mm。微观组织显示为柱状晶粒,晶粒的宽度约为3 ~ 5 μm,长度约为10 ~ 40 μm。在优化工艺参数下成形试样的室温抗拉强度高达1 761 MPa,延伸率为2.72%。
  • 图  1  H13钢粉末

    图  2  SLM技术成形H13钢单道、单层、块体的扫描策略

    图  3  不同工艺参数成形的H13钢单道形貌

    图  4  不同工艺参数成形的H13钢块体表面形貌图

    图  5  致密度与体能量密度的关系

    图  6  不同工艺参数下的H13样件在光学显微镜下的形貌

    图  7  SLM成形样件的金相图

    图  8  不同工艺参数下成形样件的力学性能

    表  1  H13钢粉末的化学成分

    SiCrMnVMoCPFe
    %
    下载: 导出CSV

    表  2  成形H13钢单道的实验参数

    因素参数值
    激光功率/W 125, 150, 175, 200, 225,250, 275, 300, 325
    扫描速度/(mm·s−1 400, 500, 600, 700, 800, 900, 1000, 1100, 1200
    层厚/mm 0.04
    预热温度/℃ 80
    下载: 导出CSV

    表  3  成形H13钢块体的实验参数

    参数数值
    激光功率/W 225, 250, 275, 300, 325
    扫描速度/(mm·s−1 600, 700, 800, 900, 1000, 1100, 1200
    扫描间距/mm 0.08, 0.1, 0.12, 0.14
    层厚/mm 0.04
    预热温度/℃ 80
    下载: 导出CSV

    表  4  不同工艺参数下成形样件的力学性能

    编号工艺参数
    (W-(mm·s−1)-mm)
    体能量密度/
    (J·mm−3
    抗拉强度/
    MPa
    延伸率/
    %
    1225-800-0.1070.311261±181.6±0.04
    2250-900-0.0886.801452±152.08±0.05
    3275-900-0.0895.481761±122.72±0.04
    4300-700-0.10107.141678±201.48±0.06
    5225-600-0.08117.191660±112.2±0.07
    下载: 导出CSV
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出版历程
  • 收稿日期:  2021-01-11
  • 网络出版日期:  2023-02-16
  • 刊出日期:  2022-12-05

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