Surface fatigue processes at impact wear of powder materials

被引：31

作者：

Kulu, Priit ^{[1
]}

Veinthal, Renno ^{[1
]}

Saarna, Mart ^{[1
]}

Tarbe, Riho ^{[1
]}

机构：

[1] Tallinn Univ Technol, Dept Mat Engn, EE-19086 Tallinn, Estonia

来源：

WEAR | 2007年 / 263卷

关键词：

powder materials; wear; erosion; impact wear; surface fatigue;

D O I：

10.1016/j.wear.2006.11.033

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

The problem of the fatigue strength of wear resistant materials is significant both from the theory and practical point of view. In abrasive wear two different mechanisms of material removal occur either separately or simultaneously. At abrasion and low-angle abrasive erosion, microcutting is dominating and the main criterion for materials selection is hardness. At abrasive impact wear and high angle abrasive erosion by irreversible deformation, direct fracture and low-cycle fatigue mechanism are dominating and materials fracture toughness is important. The aim of this work is to determine and compare fatigue behaviour at abrasive erosion and abrasive impact wear as well to study surface fatigue of the high-tech powder materials-PM/HIPed tool steels and conventional wear resistant steels. An attempt to find correlation between abrasive erosion and abrasive impact wear rates with materials surface fatigue resistance was made. (c) 2007 Elsevier B.V. All rights reserved.

引用

页码：463 / 471

页数：9