Effects of workpiece microstructure, mechanical properties and machining conditions on tool wear when milling compacted graphite iron
Artikel i vetenskaplig tidskrift, 2018

The aim of the present study was to investigate the tool performance when machining compacted graphite iron (CGI) alloys. A comparison was made between solid solution strengthened CGI including various amounts of silicon (Si-CGI) and the pearlitic-ferritic CGI as a reference material. The emphasis was on examining the influence of microstructure and mechanical properties of the material on tool wear in face milling process. Machining experiments were performed on the engine-like test pieces comprised of solid solution strengthened CGI with three different silicon contents and the reference CGI alloy. The results showed up-to 50% lower flank wear when machining Si-CGI alloys, although with comparable hardness and tensile properties. In-depth analysis of the worn tool surfaces showed that the abrasion and adhesion were the dominant wear mechanisms for all investigated alloys. However, the better tool performance when machining Si-CGI alloys was mainly due to a lower amount of abrasive carbo-nitride particles and the suppression of pearlite formation in the investigated solid solution strengthened alloys.


Tool wear



Solution hardening



Amir Malakizadi

Chalmers, Industri- och materialvetenskap, Material och tillverkning

Rohollah Ghasemi

Tekniska högskolan i Jönköping

Carsten Behring

Chalmers, Industri- och materialvetenskap

Jakob Olofsson

Tekniska högskolan i Jönköping

Anders E. W. Jarfors

Tekniska högskolan i Jönköping

Lars Nyborg

Chalmers, Industri- och materialvetenskap

Peter Krajnik

Chalmers, Industri- och materialvetenskap, Material och tillverkning


0043-1648 (ISSN)

Vol. 410 190-201



Bearbetnings-, yt- och fogningsteknik

Annan materialteknik



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