Band-Like Distribution of Grains in Selective Laser Melting Track Under Keyhole Mode

被引：6
|
作者：
Wang, Yafei [1 ]
Xing, Leilei [1 ]
Li, Kailun [1 ]
Yu, Chenfan [1 ]
Ma, Jing [1 ]
Liu, Wei [1 ]
Shen, Zhijian [1 ,2 ]
机构：
[1] Tsinghua Univ, Sch Mat Sci & Engn, Beijing 100084, Peoples R China
[2] Stockholm Univ, Dept Mat & Environm Chem, Arrhenius Lab, S-10691 Stockholm, Sweden
来源：
METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE | 2019年 / 50卷 / 02期
基金：
中国国家自然科学基金;
关键词：
MOLTEN POOL; DENDRITE GROWTH; MICROSTRUCTURE; FLOW; SOLIDIFICATION; DYNAMICS;
D O I：
10.1007/s11663-018-1483-5
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Grain structure in the melt pool under keyhole mode is complex due to complicated solidified conditions, especially in consideration of the intense fluid flow. This paper aims to clarify grain structure and grain growth mechanism in melt pool under keyhole mode in selective laser melting. The microstructure from transverse cross section and longitudinal cross section near the centerline of 316L single tracks was characterized. In the longitudinal cross section, band-like grain structure formed. It is found that fluid flow can refine the grains, and large columnar grains grow towards crystallographic < 110 > direction.
引用
收藏
页码：1035 / 1041
页数：7
相关论文
共 50 条
  • [41] Numerical modelling of keyhole formation in selective laser melting of Ti6Al4V
    Ge, Wenjun
    Fuh, Jerry Y. H.
    Na, Suck Joo
    JOURNAL OF MANUFACTURING PROCESSES, 2021, 62 : 646 - 654
  • [42] On enhancing surface wear resistance via rotating grains during selective laser melting
    Yang, Y.
    Li, X.
    Khonsari, M. M.
    Zhu, Y.
    Yang, H.
    ADDITIVE MANUFACTURING, 2020, 36
  • [43] Effects of sub-atmospheric pressure on keyhole dynamics and porosity in products fabricated by selective laser melting
    Tan, Pengfei
    Kiran, Raj
    Zhou, Kun
    JOURNAL OF MANUFACTURING PROCESSES, 2021, 64 : 816 - 827
  • [44] Selective laser melting of pure Cu with a 1 kW single mode fiber laser
    Colopi, M.
    Caprio, L.
    Demir, A. G.
    Previtali, B.
    10TH CIRP CONFERENCE ON PHOTONIC TECHNOLOGIES [LANE 2018], 2018, 74 : 59 - 63
  • [45] Effects of the powder morphology, size distribution, and characteristics on the single track formation in selective laser melting of H13 steel
    Yamaguchi, Mitsugu
    Furumoto, Tatsuaki
    Tanabe, Yuuya
    Yamada, Shinnosuke
    Osaki, Mototsugu
    Hashimoto, Yohei
    Koyano, Tomohiro
    Hosokawa, Akira
    JOURNAL OF ADVANCED MECHANICAL DESIGN SYSTEMS AND MANUFACTURING, 2021, 15 (03)
  • [46] Effects of laser energy density on morphology features and microstructures of the single molten track in selective laser melting
    Wang, Sen
    Wang, Linzhi
    Liu, Jiquan
    Yang, Runqi
    Li, Jing
    Wang, Guoyu
    FRONTIERS IN MATERIALS, 2023, 10
  • [47] Selective laser melting commercially pure Ti under vacuum
    Zhang, Baicheng
    Liao, Hanlin
    Coddet, Christian
    VACUUM, 2013, 95 : 25 - 29
  • [48] DEGRADATION OF ALUMINA PARTICLES UNDER SELECTIVE LASER MELTING CONDITIONS
    Krinitcyn, M. G.
    Knyazeva, A. G.
    Korosteleve, E. N.
    HIGH TEMPERATURE MATERIAL PROCESSES, 2022, 26 (01): : 51 - 62
  • [49] Calculation of Residual Stresses under Selective Laser Melting of Powders
    Gusarov, A. V.
    Malakhova-Zjablova, I. S.
    Perestoronina, A. V.
    METALLOFIZIKA I NOVEISHIE TEKHNOLOGII, 2013, 35 (11): : 1501 - 1516
  • [50] Mapping and modelling single scan track formation in direct metal selective laser melting
    Childs, THC
    Hauser, C
    Badrossamay, M
    CIRP ANNALS-MANUFACTURING TECHNOLOGY, 2004, 53 (01) : 191 - 194
12345