Faculty Publications

Title

Wear Resistance Properties of Austempered Ductile Iron

Document Type

Article

Keywords

Abrasive Wear, Austempering, Ductile Iron, Wear Rate, White Cast Iron

Journal/Book/Conference Title

Journal of Materials Engineering and Performance

Volume

7

Issue

1

First Page

48

Last Page

52

Abstract

A detailed review of wear resistance properties of austempered ductile iron (ADI) was undertaken to examine the potential applications of this material for wear parts, as an alternative to steels, alloyed andwhite irons, bronzes, and other competitive materials. Two modes of wear were studied: adhesive (frictional)dry sliding and abrasive wear. In the rotating dry sliding tests, wear behavior of the base material(a stationary block) was considered in relationship to countersurface (steel shaft) wear. In this wearmode, the wear rate of ADI was only one-fourth that of pearlitic ductile iron (DI) grade 100-70-03; thewear rates of aluminum bronze and leaded-tin bronze, respectively, were 3.7 and 3.3 times greater thanthat of ADI. Only quenched DI with a fully martensitic matrix slightly outperformed ADI. No significantdifference was observed in the wear of steel shafts running against ADI and quenched DI. The excellentwear performance of ADI and its countersurface, combined with their relatively low friction coefficient,indicate potential for dry sliding wear applications. In the abrasive wear mode, the wear rate of ADI wascomparable to that of alloyed hardened AISI 4340 steel, and approximately one-half that of hardenedmedium-carbon AISI 1050 steel and of white and alloyed cast irons. The excellent wear resistance of ADImay be attributed to the strain-affected transformation of high-carbon austenite to martensite that takesplace in the surface layer during the wear tests.

Original Publication Date

2-1-1997

DOI of published version

10.1007/s11665-006-5003-4

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