journal article·2018-12-01Open access

Microstructure and properties of as-cast 30Mn steel

H. H. Yan, Y. Hu, D. W. Zhao

AIP Advances· Volume 8· Issue 12

Abstract

The microstructure and properties of as-cast 30Mn steel with and without adding rare earths were systematically investigated. The microstructure was characterized by optical microscopy and scanning electron microscopy combined with energy-dispersive spectroscopy. The addition of rare earths could improve the cast structure. The austenitic transformation of the two steels was studied by differential scanning calorimetry. The onset and finish temperature of austenite increased, and the relative content of ferrites and pearlites changed. Rare earths, when added, improved the strength and plasticity, and increase the impact toughness by 31.3%. The heat deformation behavior was analyzed by using a Gleeble-3500 thermo-mechanical simulator. The onset of dynamic recrystallization was delayed, and the hot deformation microstructures were refined.
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Research context

OpenAlex topics: Microstructure and Mechanical Properties of Steels · Metallurgy and Material Forming · Metal Alloys Wear and Properties

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

School of Mechanical Engineering, Taiyuan University of Science and Technology 1 , Taiyuan 030024, Shanxi, China

School of Materials Science and Engineering, Taiyuan University of Science and Technology 2 , Taiyuan 030024, Shanxi, China

Shanxi Key Laboratory of Metallic Materials Forming Theory and Technology 3 , Taiyuan 030024, Shanxi, China

Funding

PhD research startup foundation of Taiyuan Universtity of Science and Technology · the Fund for Shanxi 1331 project key subjects construction · National Natural Science Foundation of China · Natural Science Foundation of Shanxi Province

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