Akademik Veri Yönetim Sistemi
5th International Conference on Advances in Manufacturing and Materials Engineering (ICAMME) 2022, Kuala-Lumpur, Malezya, 9 - 10 Ağustos 2022, ss.1-7
DIN 1.2714 steel is frequently used as a die
material in forging applications. The dies used in the forging process are
exposed to both impact and sliding effect during the manufacturing. Therefore,
the wear tests of such tools will be possible with a setup that can reflect the
process with quantitatively identical resemblance on a laboratory scale. Accordingly, the differences in terms of wear mechanism between the
impact sliding wear test setup designed by our team and the conventional ball
disc wear setup were evaluated. Moreover, DIN 1.2714
steels are coated with an innovative (TiCrNb-hBN) PVD layer using a high
impulse closed field unbalanced magnetron sputtering method to improve their
wear performance. Structural investigations of coatings were evaluated using Scanning
electron microscope. It was observed that the coatings grown on the surface in
granular and columnar structure. Hardness and adhesion strength values were
determined by microhardness and scratch tests, respectively. Hardness value of
the steel has been increased by approximately 90% owing to TiCrNb-hBN layer. In the wear tests of the specimens under different principles,
distinctly different wear mechanisms occurred. While plastic deformation, flaking and groove mechanisms were dominant
in impact sliding wear, adhesive and abrasive wear showed itself in ball on
disc. It has been demonstrated that the impact sliding wear assembly can better
reflect the forging process.