Effect of Processing Routes in a Multi-Pass Continuous Hybrid Process on Mechanical Properties, Microstructure, and Texture Evolutions of Low-Carbon Steel Wires

다국어 초록 (Multilingual Abstract)

In this work, a multi-pass continuous hybrid (CH) process was experimentally applied with up to five passeswith three processing routes, A, Bc, and C, to check the practicality of the processing routes and investigatetheir effect on the mechanical properties, microstructure, and texture evolutions of low-carbon steel wires.
According to the present investigation, the wires processed by the 5th pass CH process with route A showed thehighest ultimate tensile strength value (762 MPa) compared to those for routes Bc (718 MPa) and C (720 MPa),respectively. Based on the compression test results, the CH processed wire showed good workability whenthe aspect ratio was smaller than 2.4 for all the processing routes. According to the microstructure and textureevolutions, the grain sizes of the 5th pass CH processed wires decreased for all the processing routes than that ofthe initial specimen, and the wires showed mixed texture distribution of shear and drawing texture components.
From the present investigation, it was concluded that the processing routes of the CH process couldstrongly affect the microstructure and texture evolutions, resulting in changes of the mechanical propertiesand workability of the low-carbon steel wires.

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