Effect of retained austenite on wear resistance of nanostructured dual phase steels

Materials Science and Technology - Tập 32 Số 1 - Trang 40-48 - 2016
Feng Hu1, Kaiming Wu1, Peter Hodgson2,1
1The State Key Laboratory of Refractories and Metallurgy, Hubei Collaborative Innovation Center for Advanced Steels, International Research Institute for Steel Technology, Wuhan University of Science and Technology, Wuhan 430081, China
2Institute for Frontier Materials, Deakin University, Geelong, VIC 3226, Australia

Tóm tắt

Nanostructured super bainitic and quenching–partitioning (Q&P) martensitic steels with a significant amount of retained austenite obtained by low temperature bainitic transformation and Q&P respectively were studied to explore the effect of retained austenite on stirring wear resistance. The results suggest that the Q&P martensitic steel significantly enhanced the hardness of the worn surface (from 674 to 762 HV1) and increased the thickness of the deformed layer (∼3.3 μm), compared to the nanostructured bainitic steel. The underlying reason is that the Q&P martensitic steel has a higher stability of retained austenite thereby providing a superior transformation induced plasticity effect to increase surface hardness and reduce wear rate during the wear process.

Từ khóa


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Thông tin xuất bản

Materials Science and Technology

Tập 32 Số 1

40-48

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