Microstructure of spherical particles generated in high-speed machining of an alloy steel

Author:

Su Guosheng12,Guan Yanjin3,Liu Zhanqiang45

Affiliation:

1. aSchool of Mechanical & Automotive Engineering, Qilu University of Technology, Jinan, P. R. China

2. bKey Laboratory of Advanced Manufacturing and Measurement and Control Technology for Light Industry, Qilu University of Technology, Jinan, P. R. China

3. cSchool of Material Science and Engineering, Shandong University, Jinan, P. R. China

4. dSchool of Mechanical Engineering, Shandong University, Jinan, P. R. China

5. eKey Laboratory of High Efficiency and Clean Mechanical Manufacture (Shandong University), Ministry of Education, P. R. China

Abstract

AbstractCrystal-packed, honeycomb-like, and partially developed spherical particles constituted of small crystals have been found in chips yielded in high-speed machining of alloy steel AerMet100. Scanning electron microscopy and X-ray energy dispersive spectroscopy examination of the chips were carried out to investigate the formation mechanism of the spherical particles. Results show that, depending on chip size and shape, chip melting completeness changes greatly, and the solidification process of the melted chips and the final microstructure of the spherical particles are controlled by heat dissipation rate.

Publisher

Walter de Gruyter GmbH

Subject

Materials Chemistry,Metals and Alloys,Physical and Theoretical Chemistry,Condensed Matter Physics

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