LPBF 制备镍基高温合金组织及显微硬度调控能力

Mingchuan Li; Rui Ma; Shuai Chang; Hongwei Ding; Liqun Li

doi:10.12073/j.hjxb.20231108001

LPBF 制备镍基高温合金组织及显微硬度调控能力

Translated title of the contribution: Tailored ability of the microstructure and microhardness for nickel-based superalloy fabricated by LPBF

Mingchuan Li
, Rui Ma
, Shuai Chang^*
, Hongwei Ding
, Liqun Li

^*Corresponding author for this work

School of Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

Abstract

LPBF is widely used in the manufacture of nickel-based superalloy parts in aerospace industry. The microstructure which determines mechanical properties of parts is dependent on LPBF process parameters. In this work, the tailored ability of the microstructure and microhardness for LPBF built IN738LC was studied by altering heat input. The results show that the IN738LC alloy has a good printability and no crack or hole defects in the VED range of 40 J/mm³ to 97 J/mm³. The grain size increased with the heat input from a 100-micron scale of 44 J/mm³ to a millimeter scale of 94 J/mm³. The microhardness of xz plane was slightly higher than that of xOy plane. Moreover, microhardness was increased from 340 HV1.0 to 440 HV1.0 and from 330 HV1.0 to 420 HV1.0

Translated title of the contribution	Tailored ability of the microstructure and microhardness for nickel-based superalloy fabricated by LPBF
Original language	Chinese (Traditional)
Pages (from-to)	20-27
Number of pages	8
Journal	Hanjie Xuebao/Transactions of the China Welding Institution
Volume	45
Issue number	12
DOIs	https://doi.org/10.12073/j.hjxb.20231108001
State	Published - Dec 2024

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title = "LPBF 制备镍基高温合金组织及显微硬度调控能力",

abstract = "LPBF is widely used in the manufacture of nickel-based superalloy parts in aerospace industry. The microstructure which determines mechanical properties of parts is dependent on LPBF process parameters. In this work, the tailored ability of the microstructure and microhardness for LPBF built IN738LC was studied by altering heat input. The results show that the IN738LC alloy has a good printability and no crack or hole defects in the VED range of 40 J/mm3 to 97 J/mm3. The grain size increased with the heat input from a 100-micron scale of 44 J/mm3 to a millimeter scale of 94 J/mm3. The microhardness of xz plane was slightly higher than that of xOy plane. Moreover, microhardness was increased from 340 HV1.0 to 440 HV1.0 and from 330 HV1.0 to 420 HV1.0",

keywords = "laser powder bed fusion, laser power, nickel-based superalloy, scanning speed",

author = "Mingchuan Li and Rui Ma and Shuai Chang and Hongwei Ding and Liqun Li",

year = "2024",

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doi = "10.12073/j.hjxb.20231108001",

language = "繁体中文",

volume = "45",

pages = "20--27",

journal = "Hanjie Xuebao/Transactions of the China Welding Institution",

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publisher = "Harbin Research Institute of Welding",

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T1 - LPBF 制备镍基高温合金组织及显微硬度调控能力

AU - Li, Mingchuan

AU - Ma, Rui

AU - Chang, Shuai

AU - Ding, Hongwei

AU - Li, Liqun

PY - 2024/12

Y1 - 2024/12

N2 - LPBF is widely used in the manufacture of nickel-based superalloy parts in aerospace industry. The microstructure which determines mechanical properties of parts is dependent on LPBF process parameters. In this work, the tailored ability of the microstructure and microhardness for LPBF built IN738LC was studied by altering heat input. The results show that the IN738LC alloy has a good printability and no crack or hole defects in the VED range of 40 J/mm3 to 97 J/mm3. The grain size increased with the heat input from a 100-micron scale of 44 J/mm3 to a millimeter scale of 94 J/mm3. The microhardness of xz plane was slightly higher than that of xOy plane. Moreover, microhardness was increased from 340 HV1.0 to 440 HV1.0 and from 330 HV1.0 to 420 HV1.0

AB - LPBF is widely used in the manufacture of nickel-based superalloy parts in aerospace industry. The microstructure which determines mechanical properties of parts is dependent on LPBF process parameters. In this work, the tailored ability of the microstructure and microhardness for LPBF built IN738LC was studied by altering heat input. The results show that the IN738LC alloy has a good printability and no crack or hole defects in the VED range of 40 J/mm3 to 97 J/mm3. The grain size increased with the heat input from a 100-micron scale of 44 J/mm3 to a millimeter scale of 94 J/mm3. The microhardness of xz plane was slightly higher than that of xOy plane. Moreover, microhardness was increased from 340 HV1.0 to 440 HV1.0 and from 330 HV1.0 to 420 HV1.0

KW - laser powder bed fusion

KW - laser power

KW - nickel-based superalloy

KW - scanning speed

UR - https://www.scopus.com/pages/publications/85214906225

U2 - 10.12073/j.hjxb.20231108001

DO - 10.12073/j.hjxb.20231108001

M3 - 文章

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SN - 0253-360X

VL - 45

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EP - 27

JO - Hanjie Xuebao/Transactions of the China Welding Institution

JF - Hanjie Xuebao/Transactions of the China Welding Institution

IS - 12

ER -

LPBF 制备镍基高温合金组织及显微硬度调控能力

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