Elsevier

Procedia CIRP

Volume 8, 2013, Pages 200-205
Procedia CIRP

Sintering and Model of Thermal Residual Stress for Getting Cutting Tools from Functionally Gradient Materials

https://doi.org/10.1016/j.procir.2013.06.089Get rights and content
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Abstract

Cutting tools with higher wear resistance are those manufactured by powder metallurgy process, which combines the development of materials and design properties, features of shape-making technology and sintering. The annual global market of cutting tools consumes about US$ 12 billion; therefore, any research to improve tool designs and machining process techniques adds value or reduces costs. The aim is to describe the Spark Plasma Sintering (SPS) of cutting tools in functionally gradient materials, to show this structure design suitability through thermal residual stress model and, lastly, to present two kinds of inserts. For this, three cutting tool materials were used (Al2O3-ZrO2, Al2O3-TiC and WC-Co). The samples were sintered by SPS at 1300 °C and 70 MPa. The results showed that mechanical and thermal displacements may be separated during thermal treatment for analysis. Besides, the absence of cracks indicated coherence between experimental results and the residual stresses predicted.

Keywords

Sintering
Cutting tool
Functionally gradient materials
Thermal residual stress

Cited by (0)

Selection and peer-review under responsibility of The International Scientific Committee of the “14th CIRP Conference on Modeling of Machining Operations” in the person of the Conference Chair Prof. Luca Settineri.