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Author:

Guo, Yanwu (Guo, Yanwu.) | Wei, Wu (Wei, Wu.) | Shi, Wei (Shi, Wei.) | Zhou, Xiaorong (Zhou, Xiaorong.) | Wena, Shengping (Wena, Shengping.) | Wua, Xiaolan (Wua, Xiaolan.) | Gao, Kunyuan (Gao, Kunyuan.) | Zhang, Dongyun (Zhang, Dongyun.) | Qi, Peng (Qi, Peng.) | Huang, Hui (Huang, Hui.) | Nie, Zuoren (Nie, Zuoren.)

Indexed by:

EI Scopus SCIE

Abstract:

This paper centers on high-strength Al-Mg-Mn-Er-Zr alloy, which was developed through the addition of Er, a cheap rare earth element, and suitable for additive manufacturing (3D printing). The microstructure and mechanical properties of Al-Mg-Mn-Er-Zr alloy of as-built and heat treated samples have been characterized, which shows: the precipitation of Al3Zr primary phase at the boundary of molten pool promotes heterogeneous nucleation and refines the grains, which suppresses the formation of solidification cracking in Al-Mg alloy. To bring the Er-Zr synergistic effect into play during the aging heat treatment, the nano-scale precipitation phase of Al3Er that diffuses nucleation at an earlier stage promotes the precipitation of Zr, leading to the formation of Al-3(Er,Zr) core-shell structure and enhancing precipitation strengthening effect. Under the combined effects of multiple strengthening mechanisms, the yield strength could reach 440 +/- 3 MPa; tensile strength, 520 +/- 2 MPa and elongation 15.5 +/- 1.0 %. (C) 2022 The Author(s). Published by Elsevier Ltd.

Keyword:

Er-Zr modification Aluminum alloys Hot cracking Additive manufacturing Er-Zr synergism

Author Community:

  • [ 1 ] [Guo, Yanwu]Beijing Univ Technol, Educ Minist China, Key Lab Adv Funct Mat, Beijing 100124, Peoples R China
  • [ 2 ] [Wei, Wu]Beijing Univ Technol, Educ Minist China, Key Lab Adv Funct Mat, Beijing 100124, Peoples R China
  • [ 3 ] [Wena, Shengping]Beijing Univ Technol, Educ Minist China, Key Lab Adv Funct Mat, Beijing 100124, Peoples R China
  • [ 4 ] [Wua, Xiaolan]Beijing Univ Technol, Educ Minist China, Key Lab Adv Funct Mat, Beijing 100124, Peoples R China
  • [ 5 ] [Gao, Kunyuan]Beijing Univ Technol, Educ Minist China, Key Lab Adv Funct Mat, Beijing 100124, Peoples R China
  • [ 6 ] [Qi, Peng]Beijing Univ Technol, Educ Minist China, Key Lab Adv Funct Mat, Beijing 100124, Peoples R China
  • [ 7 ] [Huang, Hui]Beijing Univ Technol, Educ Minist China, Key Lab Adv Funct Mat, Beijing 100124, Peoples R China
  • [ 8 ] [Nie, Zuoren]Beijing Univ Technol, Educ Minist China, Key Lab Adv Funct Mat, Beijing 100124, Peoples R China
  • [ 9 ] [Shi, Wei]Inst Corros Sci & Technol, Guangzhou 510530, Peoples R China
  • [ 10 ] [Zhou, Xiaorong]Univ Manchester, Dept Mat, Manchester M13 9PL, England
  • [ 11 ] [Zhang, Dongyun]Beijing Univ Technol, Fac Mat & Mfg, Inst Laser Engn, Beijing 100124, Peoples R China
  • [ 12 ] [Zhang, Dongyun]Beijing Engn Res Ctr 3D Printing Digital Med Hlth, Beijing 100124, Peoples R China

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Source :

MATERIALS & DESIGN

ISSN: 0264-1275

Year: 2022

Volume: 222

8 . 4

JCR@2022

8 . 4 0 0

JCR@2022

ESI Discipline: MATERIALS SCIENCE;

ESI HC Threshold:66

JCR Journal Grade:1

CAS Journal Grade:2

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count: 27

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 4

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