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Inicio Ciência & Tecnologia dos Materiais In the search of nanocrystallinity in tool-steel chips
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Vol. 29. Issue 1.
Materiais 2015
Pages e62-e64 (January - April 2017)
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Vol. 29. Issue 1.
Materiais 2015
Pages e62-e64 (January - April 2017)
DOI: 10.1016/j.ctmat.2016.07.016
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In the search of nanocrystallinity in tool-steel chips
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S.C. Godinho, R.F. Santos
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rbns@fe.up

Corresponding author.
, M.T. Vieira
CEMUC – Centro de Engenharia Mecânica da Universidade de Coimbra, Rua Luís Reis dos Santos, 3030-788 Coimbra, Portugal
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Abstract

Proper waste handling and sustainable recycling approaches are emerging topics for environmental safety and ecomanufacturing technologies. Steel chips resulting from new machining procedures are good candidates as new raw material for innovative recycling approaches due to their unique characteristics. The objective of this study was to characterize as-quenched H13 (AISI- SAE) tool steel chips produced by a machining procedure. Microhardness tests, SEM/EBSD and TEM techniques were used for hardness evaluation and microstructural characterization. Chips display a highly strained submicron-nanocrystalline grain structure with hardness up to 6.2GPa. Such characteristics suggest the chips are suitable for powder manufacturing processes such as ball milling instead of atomization process.

Keywords:
Tool steel (H13)
chips
waste
machining
ecomanufacturing
recycling
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Copyright © 2017. Portuguese Society of Materials (SPM)
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