PMID- 36990020
OWN - NLM
STAT- PubMed-not-MEDLINE
DCOM- 20230528
LR  - 20230528
IS  - 1874-9968 (Electronic)
IS  - 0041-624X (Linking)
VI  - 132
DP  - 2023 Jul
TI  - Effects of ultrasonic vibration on microstructure and mechanical properties of 
      1Cr12Ni3MoVN alloy fabricated by directed energy deposition.
PG  - 106989
LID - S0041-624X(23)00065-3 [pii]
LID - 10.1016/j.ultras.2023.106989 [doi]
AB  - Due to the rapid melting and solidification during directed energy deposition 
      (DED) process, the defects and columnar crystals are likely to generate in the 
      deposition layers, which reduce the quality and performance of the whole parts. 
      Therefore, in order to improve the microstructure and mechanical properties of 
      1Cr12Ni3MoVN alloy manufactured by DED method, ultrasonic vibration (UV) has been 
      employed to assist directed energy deposition process in this work. The results 
      indicate that the high-intensity ultrasonic vibration can weaken the epitaxy 
      growth tendency of crystal grains, and significantly improve plasticity while 
      keeping an approximate strength. In addition, a two-dimensional numerical model 
      is established to simulate the effect of ultrasonic vibration in the molten pool. 
      The simulation results show that ultrasonic vibration remarkably improves the 
      flow velocity and pressure in the molten pool, inducing the cavitation effect 
      that breaks dendritic crystal and affects crystal characteristics. Meanwhile, the 
      acoustic streaming effect changes the thermodynamic conditions and promotes 
      high-temperature diffusion, which uniforms temperature distribution and reduces 
      the temperature gradient in the molten pool. Thus the reduced temperature 
      gradient G and raised solidification growth rate R promote the formation of fine 
      equiaxed crystal characteristics after UV treatment. The product G x R increases 
      and the ratio G/R decreases after UV treatment, resulting in the formation of 
      fine equiaxed crystals.
CI  - Copyright (c) 2023 Elsevier B.V. All rights reserved.
FAU - Wang, Zhen
AU  - Wang Z
AD  - Key Laboratory of Superlight Materials & Surface Technology, Ministry of 
      Education, College of Materials Science and Chemical Engineering, Harbin 
      Engineering University, Harbin 150001, China.
FAU - Jiang, Fengchun
AU  - Jiang F
AD  - Key Laboratory of Superlight Materials & Surface Technology, Ministry of 
      Education, College of Materials Science and Chemical Engineering, Harbin 
      Engineering University, Harbin 150001, China; Yantai Research Institute and 
      Graduate School of Harbin Engineering University, Yantai 264006, China. 
      Electronic address: fengchunjiang@hrbeu.edu.cn.
FAU - Guo, Chunhuan
AU  - Guo C
AD  - Key Laboratory of Superlight Materials & Surface Technology, Ministry of 
      Education, College of Materials Science and Chemical Engineering, Harbin 
      Engineering University, Harbin 150001, China. Electronic address: 
      guochunhuan@hrbeu.edu.cn.
FAU - Xing, Xiaodong
AU  - Xing X
AD  - Key Laboratory of Superlight Materials & Surface Technology, Ministry of 
      Education, College of Materials Science and Chemical Engineering, Harbin 
      Engineering University, Harbin 150001, China.
FAU - Yang, Zhenlin
AU  - Yang Z
AD  - Yantai Research Institute and Graduate School of Harbin Engineering University, 
      Yantai 264006, China.
FAU - Li, Haixin
AU  - Li H
AD  - Yantai Research Institute and Graduate School of Harbin Engineering University, 
      Yantai 264006, China.
FAU - Liu, Chuanming
AU  - Liu C
AD  - Key Laboratory of Superlight Materials & Surface Technology, Ministry of 
      Education, College of Materials Science and Chemical Engineering, Harbin 
      Engineering University, Harbin 150001, China.
FAU - Xu, De
AU  - Xu D
AD  - Key Laboratory of Superlight Materials & Surface Technology, Ministry of 
      Education, College of Materials Science and Chemical Engineering, Harbin 
      Engineering University, Harbin 150001, China.
FAU - Jiang, Guorui
AU  - Jiang G
AD  - Key Laboratory of Superlight Materials & Surface Technology, Ministry of 
      Education, College of Materials Science and Chemical Engineering, Harbin 
      Engineering University, Harbin 150001, China.
FAU - Konovalov, Sergey
AU  - Konovalov S
AD  - Yantai Research Institute and Graduate School of Harbin Engineering University, 
      Yantai 264006, China; Siberian State Industrial University, 42 Kirov Street, 
      Novokuznetsk 654007, Russia.
LA  - eng
PT  - Journal Article
DEP - 20230325
PL  - Netherlands
TA  - Ultrasonics
JT  - Ultrasonics
JID - 0050452
SB  - IM
OTO - NOTNLM
OT  - 1Cr12Ni3MoVN alloy
OT  - Directed energy deposition
OT  - Microstructure and mechanical properties
OT  - Ultrasonic vibration
COIS- Declaration of Competing Interest The authors declare that they have no known 
      competing financial interests or personal relationships that could have appeared 
      to influence the work reported in this paper.
EDAT- 2023/03/30 06:00
MHDA- 2023/03/30 06:01
CRDT- 2023/03/29 18:14
PHST- 2022/11/08 00:00 [received]
PHST- 2023/02/16 00:00 [revised]
PHST- 2023/03/20 00:00 [accepted]
PHST- 2023/03/30 06:01 [medline]
PHST- 2023/03/30 06:00 [pubmed]
PHST- 2023/03/29 18:14 [entrez]
AID - S0041-624X(23)00065-3 [pii]
AID - 10.1016/j.ultras.2023.106989 [doi]
PST - ppublish
SO  - Ultrasonics. 2023 Jul;132:106989. doi: 10.1016/j.ultras.2023.106989. Epub 2023 
      Mar 25.