Journal
FRONTIERS IN MATERIALS
Volume 6, Issue -, Pages -Publisher
FRONTIERS MEDIA SA
DOI: 10.3389/fmats.2019.00153
Keywords
carbon content; hardness; impact toughness; abrasive impact wear; low alloy wear resistant cast steel
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Funding
- Key Research and Development Plan of Yunnan Province [2017IB021]
- Key Scientific and Technological Project of Henan Province [192102210009, 182102210043]
- open science and technology cooperation project of Henan province [182106000024]
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The effects of carbon contents on microstructure evolution and mechanical properties, including hardness, impact toughness and abrasive impact wear resistance behavior, were investigated for Cr-Si-Mn low alloy cast steels. The results showed that, with the increase of carbon content in the steels, the metallographic structure transformed from lath martensite to acicular martensite gradually. Correspondingly, the hardness increased and impact toughness decreased distinctly due to the increasing of carbon supersaturation and refinement of martensite. Furthermore, the wear resistant increased firstly and then decreased, which can be ascribed to the changing of wear mechanism from plastic fatigue wear to brittle fracture wear.
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