一种核电用镍基合金焊丝熔敷金属的组织与性能

Xiao Guo; Peng He; Kai Xu; Peiyin Chen; Bo Chen; Shubin Huo

doi:10.12073/j.hjxb.20191120002

一种核电用镍基合金焊丝熔敷金属的组织与性能

Translated title of the contribution: Microstructure and mechanical properties of deposited metal for nuclear plant nickel alloy welding wire

Xiao Guo
, Peng He^*
, Kai Xu
, Peiyin Chen
, Bo Chen
, Shubin Huo

^*Corresponding author for this work

School of Materials Science and Engineering

Harbin Institute of Technology
Harbin Welding Institute
Harbin Well Welding Co., LTd

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

5 Scopus citations

Abstract

Microstructure and mechanical properties of deposited metal with experimental nickel alloy wires by GTAW was investigated by JMatPro software, OM, SEM, TEM etc. Results indicated that there were columnar γ matrix, interdentritic precipitates including σ phase, MC carbides, Laves phases in the deposited metal. Compared with nominal chemical compositions, dendrite core has higher Fe content and lower Nb, Mo content, while interdendritic segregation zone has higher Nb, Mo content and lower Fe content. MC carbide was (Nb, Ti)C, Laves is rich in Mo and Cr with structural formula (Ni, Cr, Fe)₂(Nb, Mo), σ phases is rich in Mo and Cr with MoCrFe tetragonal structure. The deposited metal has high strength and good ductility at room temperature and 350℃. Dimples along grain boundary dominants the fracture morphology of tensile specimen at room temperature, with dense precipitates in the bottom of dimples.

Translated title of the contribution	Microstructure and mechanical properties of deposited metal for nuclear plant nickel alloy welding wire
Original language	Chinese (Traditional)
Pages (from-to)	26-30
Number of pages	5
Journal	Hanjie Xuebao/Transactions of the China Welding Institution
Volume	41
Issue number	4
DOIs	https://doi.org/10.12073/j.hjxb.20191120002
State	Published - 25 Apr 2020

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10.12073/j.hjxb.20191120002

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title = "一种核电用镍基合金焊丝熔敷金属的组织与性能",

abstract = "Microstructure and mechanical properties of deposited metal with experimental nickel alloy wires by GTAW was investigated by JMatPro software, OM, SEM, TEM etc. Results indicated that there were columnar γ matrix, interdentritic precipitates including σ phase, MC carbides, Laves phases in the deposited metal. Compared with nominal chemical compositions, dendrite core has higher Fe content and lower Nb, Mo content, while interdendritic segregation zone has higher Nb, Mo content and lower Fe content. MC carbide was (Nb, Ti)C, Laves is rich in Mo and Cr with structural formula (Ni, Cr, Fe)2(Nb, Mo), σ phases is rich in Mo and Cr with MoCrFe tetragonal structure. The deposited metal has high strength and good ductility at room temperature and 350℃. Dimples along grain boundary dominants the fracture morphology of tensile specimen at room temperature, with dense precipitates in the bottom of dimples.",

keywords = "Laves phase, Nickel alloy, Nuclear plant, σ phase",

author = "Xiao Guo and Peng He and Kai Xu and Peiyin Chen and Bo Chen and Shubin Huo",

year = "2020",

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doi = "10.12073/j.hjxb.20191120002",

language = "繁体中文",

volume = "41",

pages = "26--30",

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

issn = "0253-360X",

publisher = "Harbin Research Institute of Welding",

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TY - JOUR

T1 - 一种核电用镍基合金焊丝熔敷金属的组织与性能

AU - Guo, Xiao

AU - He, Peng

AU - Xu, Kai

AU - Chen, Peiyin

AU - Chen, Bo

AU - Huo, Shubin

PY - 2020/4/25

Y1 - 2020/4/25

N2 - Microstructure and mechanical properties of deposited metal with experimental nickel alloy wires by GTAW was investigated by JMatPro software, OM, SEM, TEM etc. Results indicated that there were columnar γ matrix, interdentritic precipitates including σ phase, MC carbides, Laves phases in the deposited metal. Compared with nominal chemical compositions, dendrite core has higher Fe content and lower Nb, Mo content, while interdendritic segregation zone has higher Nb, Mo content and lower Fe content. MC carbide was (Nb, Ti)C, Laves is rich in Mo and Cr with structural formula (Ni, Cr, Fe)2(Nb, Mo), σ phases is rich in Mo and Cr with MoCrFe tetragonal structure. The deposited metal has high strength and good ductility at room temperature and 350℃. Dimples along grain boundary dominants the fracture morphology of tensile specimen at room temperature, with dense precipitates in the bottom of dimples.

AB - Microstructure and mechanical properties of deposited metal with experimental nickel alloy wires by GTAW was investigated by JMatPro software, OM, SEM, TEM etc. Results indicated that there were columnar γ matrix, interdentritic precipitates including σ phase, MC carbides, Laves phases in the deposited metal. Compared with nominal chemical compositions, dendrite core has higher Fe content and lower Nb, Mo content, while interdendritic segregation zone has higher Nb, Mo content and lower Fe content. MC carbide was (Nb, Ti)C, Laves is rich in Mo and Cr with structural formula (Ni, Cr, Fe)2(Nb, Mo), σ phases is rich in Mo and Cr with MoCrFe tetragonal structure. The deposited metal has high strength and good ductility at room temperature and 350℃. Dimples along grain boundary dominants the fracture morphology of tensile specimen at room temperature, with dense precipitates in the bottom of dimples.

KW - Laves phase

KW - Nickel alloy

KW - Nuclear plant

KW - σ phase

UR - https://www.scopus.com/pages/publications/85089236444

U2 - 10.12073/j.hjxb.20191120002

DO - 10.12073/j.hjxb.20191120002

M3 - 文章

AN - SCOPUS:85089236444

SN - 0253-360X

VL - 41

SP - 26

EP - 30

JO - Hanjie Xuebao/Transactions of the China Welding Institution

JF - Hanjie Xuebao/Transactions of the China Welding Institution

IS - 4

ER -

一种核电用镍基合金焊丝熔敷金属的组织与性能

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