Structural State, Phase Composition and Mechanical Properties of Wear-resistant Cast Iron Modified by Ultrafine Powders

被引：3

作者：

Zykova, Anna P. ^{[1
,2
]}

Kurzina, Irina A. ^{[1
,2
]}

Lychagin, Dmitry V. ^{[1
,3
]}

Chumaevsky, Andrey V. ^{[3
]}

Kachaev, Artem A. ^{[1
]}

Bataev, Vladimir A. ^{[4
]}

机构：

[1] Natl Res Tomsk Polytech Univ, Lenina Av 30, Tomsk, Russia

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

[3] Tomsk State Univ Architecture & Bldg, Tomsk 634050, Russia

[4] Novosibirsk State Tech Univ, Novosibirsk, Russia

来源：

NANOMATERIALS FOR STRUCTURAL, FUNCTIONAL AND BIOMEDICAL APPLICATIONS | 2014年 / 872卷

基金：

俄罗斯基础研究基金会;

关键词：

modification; ultrafine powders; wear-resistant cast iron; microstructure; phase composition; deformation behavior and failure; wearability; corrosion resistance;

D O I：

10.4028/www.scientific.net/AMR.872.84

中图分类号：

R318 [生物医学工程];

学科分类号：

0831 ;

摘要：

The paper explores the effect of a modifier based on ultrafine powders of refractory metal oxides on the change of structural state, phase composition and mechanical properties of cast iron of (Russian grade). It was shown that the modifier added to the melt does not change the phase composition of ferrite-austenitic matrix and carbides and is not carbide-forming. Material microstructure changes only due to the presence of a large amount of crystallization nuclei during the casting cooling. It was established that the modification increases the ultimate stress limit by 53%, plasticity by 10.7%, corrosion resistance by 15%, and leads to the reduction of friction factor and linear wear due to the decreasing of structural elements: carbide phase and austenitic-carbidic eutectic.

引用

页码：84 / +

页数：2

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