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Coatings for Cutting Tools V5.pdf (634.72 KB)

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The Effect of Engineered Surfaces on the Mechanical Properties of Tool Steels Used for Industrial Cutting Tools

Strahin, Brandon L
http://rave.ohiolink.edu/etdc/view?acc_num=akron1506692623324192

Abstract Details

2017, Master of Science in Engineering, University of Akron, Mechanical Engineering.
Years of experience have revealed the need for improvements in the performance of cutting tools. One theory to improve cutting tool performance is to reduce shear stresses by applying lubricious engineered surfaces, alter the amount of contact stress transmitted to the substrate material by using a surface with a stiffness that differs from the substrate, and to improve fatigue and wear characteristics of the tool by imparting residual stresses and reducing the average surface roughness by prohibiting crack propagation. This study examined the performance of several engineered surfaces, including superfinishing, thermochemical coatings, and physical vapor deposition coatings. The most significant improvement in performance was due to titanium-doped molybdenum disulfide (Ti-MoS2), which showed a 370% increase in cycles to failure, had the lowest shear stresses in the surface of the material, and showed the lowest resistance to plastic deformation. The data show a high correlation between the resistance to plastic deformation of the coating and the number of cycles to failure. This suggests that one of the most significant material properties in coatings for cutting tools is the ability to deform with the substrate. The second largest improvement was produced by ferritic nitrocarburizing (FeNC), which provided an increase of 110% in cycles to failure. WC/aC:H decreased cycles to failure by 86%.
Gary Doll, PhD (Committee Chair)
Paul Shiller, PhD (Committee Co-Chair)
39 p.
Engineering; Materials Science; Mechanical Engineering
wear; impact; sliding; chromium nitride; titanium molybdenum disulfide; tungsten carbide amorphous hydrocarbon

Recommended Citations

Citations

  • Strahin, B. L. (2017). The Effect of Engineered Surfaces on the Mechanical Properties of Tool Steels Used for Industrial Cutting Tools [Master's thesis, University of Akron]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=akron1506692623324192

    APA Style (7th edition)

  • Strahin, Brandon. The Effect of Engineered Surfaces on the Mechanical Properties of Tool Steels Used for Industrial Cutting Tools. 2017. University of Akron, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=akron1506692623324192.

    MLA Style (8th edition)

  • Strahin, Brandon. "The Effect of Engineered Surfaces on the Mechanical Properties of Tool Steels Used for Industrial Cutting Tools." Master's thesis, University of Akron, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=akron1506692623324192

    Chicago Manual of Style (17th edition)

akron1506692623324192
385
© 2017, all rights reserved.
This open access ETD is published by University of Akron and OhioLINK.