Integrated Computational Materials, Process and Product Engineering – IC-MPPE 2022

Rotary-percussive drilling in steel reinforced concrete subjects cemented tungsten carbide hammer drill bits to intensive wear from many active wear mechanisms as well as high mechanical and thermo-mechanical loading which may lead to premature failure due to overload or fatigue fracture. To ensure the required component lifetime and reliability in this challenging application, a large number...

Hardmetals are used as tool materials in various areas such as metal machining or metal forming, where they are exposed to high temperatures and high loads. Hardmetals have good high-temperature properties, but these properties are influenced by the microstructure and operating condition. Therefore, knowledge of limits for their failure-proof application are important for the design of...

Due to its high hardness and wear resistance as well as its good chemical stability, chemical vapor deposited TiB2 serves as protective coating in machining of Ti and Al alloys. To prevent B diffusion into the substrate, typically a TiN diffusion barrier layer is deposited beneath the TiB2 layer. However, the sharp transition from the face-centered cubic (fcc) TiN with its tensile residual...

Variation in lifetime of used coated cemented carbide tools in cutting applications are evident, even when using the same machine, same cooling conditions as well as the same steel material.
The common steel classification only defines the chemical composition of the steel grades, but the frequency and size of non-metallic inclusions is not clearly determined.
This study examines this...