Effect of Carbide Orientation on Impact-Abrasive Wear Resistance of High-Cr Iron Used in Shot Blast Machine

被引：24

作者：

Wang, Shouren ^{[1
]}

Song, Linghui ^{[1
]}

Qiao, Yang ^{[1
]}

Wang, Min ^{[2
]}

机构：

[1] Univ Jinan, Sch Mech Engn, Jinan 250022, Peoples R China

[2] Shandong Univ, Ind Grp Corp, Jinan 250014, Peoples R China

来源：

TRIBOLOGY LETTERS | 2013年 / 50卷 / 03期

基金：

中国国家自然科学基金;

关键词：

Carbides; Impact wear; Abrasive wear; High-chromium cast irons; Wear resistance; WHITE CAST-IRON; MICROSTRUCTURE; MECHANISMS; CORROSION; BEHAVIOR;

D O I：

10.1007/s11249-013-0140-z

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

In this work, the blades of shot-blasting machine were fabricated by high-chromium cast irons using investment cast processing to control different cooled rate in order to achieve solidification unidirectionally. The microstructure of oriented M7C3 carbides was simulated and revealed using deep itching methods. The rod-like M7C3 carbides in longitudinal direction and lath-shaped M7C3 carbides in transverse and vertical direction are observed. When the long axis of the carbide rods is paralleling to the shots flow direction, high-chromium cast irons possess higher hardness and fracture toughness than that of perpendicular to the shots flow direction. The results reveal that the blades possessing oriented M7C3 carbides in longitudinal direction exhibit excellent impact-abrasive wear resistance than that of in transverse and vertical direction. The wear surface was examined by scanning electron microscopy for identifying the impact wear mechanisms.

引用

页码：439 / 448

页数：10

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