On the influence of batch-to-batch microstructural variations on tool wear when machining C38 micro-alloyed steel
Journal article, 2025

Sustainable machining in micro-alloyed carbon steels necessitates a thorough understanding of microstructural variations and their subsequent influence on the machinability of different batches. This research investigates the machinability variation between two batches of a modified pearlitic-ferritic C38 micro-alloyed steel with a similar nominal chemical composition, through correlation of their tool wear responses at different cutting conditions to discrepancies in the microstructure and non-metallic inclusions between both batches. One batch of steel exhibits enhanced machinability for all investigated cutting conditions, showing remarkably different levels of wear development under similar cutting conditions and spiral cutting lengths. The different wear responses are then compared in association with the thermo-mechanical loads and microstructural discrepancies, where the less machinable batch is determined to have a lower ferritic volume fraction, higher hardness, and more abrasive nitrides than the other batch.

micro-alloyed steel

inclusion

Tool wear

machinability

Author

Charlie Salame

Chalmers, Industrial and Materials Science, Materials and manufacture

Amir Malakizadi

Chalmers, Industrial and Materials Science, Materials and manufacture

Uta Klement

Chalmers, Industrial and Materials Science, Materials and manufacture

Wear

0043-1648 (ISSN)

Vol. 562-563 205632

A framework for the physics-based estimation of tool wear in machining process (WEAR-FRAME)

VINNOVA (2020-05179), 2021-03-22 -- 2024-11-20.

Subject Categories

Production Engineering, Human Work Science and Ergonomics

Materials Engineering

Manufacturing, Surface and Joining Technology

Metallurgy and Metallic Materials

Areas of Advance

Production

Materials Science

Infrastructure

Chalmers Materials Analysis Laboratory

DOI

10.1016/j.wear.2024.205632

More information

Latest update

11/28/2024