冷金属过渡电弧增材制造H13钢块体的显微组织与力学性能
Microstructure and Mechanical Properties of Cold Metal Transfer Wire-Arc Additive Manufactured H13 Steel Block
摘 要
采用机器人辅助冷金属过渡电弧增材制造技术制备五层十五道结构的H13钢块体，研究了沉积块体的表面质量、显微组织和力学性能。结果表明：H13钢块体表面无宏观裂纹；块体主体区组织为晶粒取向均匀的针状马氏体，搭接区组织由晶粒取向杂乱的针状马氏体和不规则铁素体组成；块体主体区的平均显微硬度为479 HV，远高于退火态H13钢的（254 HV），而搭接区因存在铁素体，其硬度明显降低，平均值仅为381 HV；冷金属过渡电弧增材制造H13钢块体的整体拉伸性能优于退火态H13钢的。
冷金属过渡
显微组织
显微硬度
拉伸性能
additive manufacture
cold metal transfer
microstructure
micro-hardness
tensile property
Abstract
H13 steel blocks with a 5-layer and 15-pass structure were prepared by robotic cold metal transfer wire-arc additive manufacturing technique. The surface quality, microstructure and mechanical properties of the deposited block were investigated. The results show that there was no macro-crack on the surface of H13 steel block. The structure of the body-zone of the block was acicular martensite with uniform grain orientation, and the structure of the lap-zone was composed of acicular martensite with irregular grain orientation and irregular ferrite. The average micro-hardness of the body-zone of the block was 479 HV, which was much higher than that of annealed H13 steel (254 HV), while the hardness of the lap-zone significantly decreased due to the presence of ferrite, with the average value of 381 HV. The overall tensile properties of the cold metal transfer wire-arc additive manufactured H13 steel block were better than those of annealed H13 steel.
中图分类号 TG47 DOI 10.11973/jxgccl202004013
所属栏目 材料性能及应用
基金项目 国家重点研发计划项目（2017YFB1104803）；国家自然科学基金资助项目（51005004）；北京市自然科学基金资助项目（3132006）
收稿日期 2019/1/18
修改稿日期 2019/12/12
网络出版日期
作者单位点击查看
备注白涛(1993-),男,北京人,硕士研究生
引用该论文: BAI Tao,LIN Jian,CHENG Sihua,LEI Yongping,FU Hanguang,GE Jinguo. Microstructure and Mechanical Properties of Cold Metal Transfer Wire-Arc Additive Manufactured H13 Steel Block[J]. Materials for mechancial engineering, 2020, 44(4): 67～71
白涛,林健,程四华,雷永平,符寒光,葛进国. 冷金属过渡电弧增材制造H13钢块体的显微组织与力学性能[J]. 机械工程材料, 2020, 44(4): 67～71
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【4】熊江涛, 耿海滨, 林鑫,等. 电弧增材制造研究现状及在航空制造中应用前景[J]. 航空制造技术, 2015, 493(23/24):80-85.
【5】WANG T T, ZHANG Y, WU Z, et al. Microstructure and properties of die steel fabricated by WAAM using H13 wire[J]. Vacuum, 2018, 149:185-189.
【6】YAN J J, ZHENG D L, LI H X, et al. Selective laser melting of H13:Microstructure and residual stress[J]. Journal of Materials Science, 2017, 52(20):12476-12485.
【7】WANG P, HU S, SHEN J, et al. Characterization the contribution and limitation of the characteristic processing parameters in cold metal transfer deposition of an Al alloy[J]. Journal of Materials Processing Technology, 2017, 245:122-133.
【8】柏久阳, 王计辉, 林三宝,等. 铝合金电弧增材制造焊道宽度尺寸预测[J]. 焊接学报, 2015, 36(9):87-90.
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【10】ALMANGOUR B, GRZESIAK D, YANG J M. Selective laser melting of TiB2/H13 steel nanocomposites:Influence of hot isostatic pressing post-treatment[J]. Journal of Materials Processing Technology, 2017, 244:344-353.
【11】ALMANGOUR B, GRZESIAK D, YANG J M. Nanocrystalline TiC-reinforced H13 steel matrix nanocomposites fabricated by selective laser melting[J]. Materials & Design, 2016, 96:150-161.
【12】PINKERTON A J, LI L. Direct additive laser manufacturing using gas- and water-atomised H13 tool steel powders[J]. International Journal of Advanced Manufacturing Technology, 2005, 25(5/6):471-479.
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