Structure and Properties of R18U Surfacing of Highspeed Steel After its High Tempering

被引：5

作者：

Ivanov, Yu. F. ^{[1
]}

Gromov, V. E. ^{[2
]}

Potekaev, A. I. ^{[3
]}

Guseva, T. P. ^{[2
]}

Chapaikin, A. S. ^{[2
]}

Vashchuk, E. S. ^{[2
]}

Romanov, D. A. ^{[2
]}

机构：

[1] Russian Acad Sci, Inst High Current Elect, Siberian Branch, Tomsk, Russia

[2] Siberian State Ind Univ, Novokuznetsk, Russia

[3] Natl Res Tomsk State Univ, Tomsk, Russia

来源：

RUSSIAN PHYSICS JOURNAL | 2023年 / 66卷 / 07期

基金：

俄罗斯科学基金会;

关键词：

plasma surfacing; flux-cored wire; high-temperature tempering; structure; mechanical and tribological properties;

D O I：

10.1007/s11182-023-02999-w

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Using plasma surfacing in a nitrogen environment with a PP-R18U non-current-carrying flux-cored wire, the layers up to 10 mm thick were formed on a 30HGSA steel, followed by an additional high-temperature tempering (at 580 degrees C for 1 hour in 4 tempers). It is shown that the deposited layer has a frame-type structure formed by alpha-iron grains with extended layers of the Fe3W3C (M6C) carbide phase located along the boundaries. Nanosized particles of carbides of the V4C3, Cr7C3, Fe3C, Cr23C6 and WC1-x types are identified in the grain volume. It is found out that high tempering increases the microhardness of the deposited PP-R18U layer by 13% (up to 5.3 GPa) and decreases its wear resistance by 12.3% the friction coefficient by 7.7%.

引用

页码：731 / 739

页数：9

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