Study o n surfacing process of Ni<sub>3</sub>Al-based metal powder-cored wire

ZHUO Xiao; TANG Weigang; LUO Shougen; LIU Jinxi-ang; LUO Liangliang; ZHAO Lin

doi:10.7512/j.issn.1001-2303.2021.10.03

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Study o n surfacing process of Ni₃Al-based metal powder-cored wire
Vol. 51, Issue 10, Pages: 15-18(2021)
DOI： 10.7512/j.issn.1001-2303.2021.10.03

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ZHUO Xiao, TANG Weigang, LUO Shougen, et al. Study o n surfacing process of Ni₃Al-based metal powder-cored wire. [J]. 51(10):15-18(2021)
DOI：

ZHUO Xiao, TANG Weigang, LUO Shougen, et al. Study o n surfacing process of Ni₃Al-based metal powder-cored wire. [J]. 51(10):15-18(2021) DOI： 10.7512/j.issn.1001-2303.2021.10.03.

摘要

采用非熔化极气体保护焊（TIG）进行熔覆堆焊,研究Ni,3,Al及Ni,3,Al+Cr,3,C,2,金属间化合物基金属粉芯焊丝在45#钢、304不锈钢、42Cr Mo合金钢、4Cr14Ni14W2Mo耐热不锈钢基板上的熔覆层组织和性能。结果表明:（1）Ni,3,Al+Cr,3,C,2,熔覆后的平均稀释率（34.55%）低于Ni,3,Al熔覆后的平均稀释率（42.8%）;（2）采用纯Ni,3,Al金属粉芯焊丝堆焊后的熔覆层主要为单一的γ’-Ni,3,Al相,采用Ni,3,Al+Cr,3,C,2,时,熔覆层主要由γ’-Ni,3,Al相MC型及M,23,C,6,型碳化物组成;（3）Ni,3,Al+Cr,3,C,2,熔覆层的显微硬度显著高于纯Ni,3,Al熔覆层;（4）采用Ni,3,Al、Ni,3,Al+Cr,3,C,2,金属粉芯焊丝在4种实验基板上熔覆,焊道冶金结合良好、润湿良好,堆焊后缺陷少,堆焊层硬度高于母材,能够用于相关材料表面增强熔覆。

Abstract

The TIG welding is used for surfacing to study the cladding layers of Ni,3,Al and Ni,3,Al+Cr,3,C,2, intermetallic compoundbased metal powder-cored wires on different substrate materials.The results show that:（1） After cladding, the average dilution rate of Ni,3,Al+Cr,3,C,2, wire（34.55%） is lower than that of Ni,3,Al wire（42.8%）;（2） The microstructure of cladding layer after surfacing with pure Ni,3,Al metal powder-cored wire is mainly single γ’-Ni,3,Al phase, and when using Ni,3,Al+Cr,3,C,2, wire, the cladding layer is mainly composed of γ’-Ni,3,Al phase and MC type and M23 C6 type carbides;（3）The microhardness of Ni,3,Al+Cr,3,C,2, cladding layer is significantly higher than that of pure Ni,3,Al cladding layer;（4） Using Ni,3,Al,Ni,3,Al+Cr,3,C,2, metal powder-cored wire for cladding on 4 kinds of experimental substrates, the bead has good metallurgy bonding and wetting, and few defects after surfacing, and the hardness of the surfacing layer is higher than that of the base metal, so it can be used for surfacing of related materials.

关键词

Ni3AlNi3Al+Cr3C2工艺性熔覆层金属粉芯焊丝

Keywords

Ni3AlNi3Al +Cr3C2manufacturabilitycladding layermetal powder-cored wire

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Study o n surfacing process of Ni3Al-based metal powder-cored wire

DOI： 10.7512/j.issn.1001-2303.2021.10.03

摘要

Abstract

关键词

Keywords

references

Study o n surfacing process of Ni₃Al-based metal powder-cored wire