This paper analyses the fracture behavior of the brazed BCBN grain by comparison with brazed PCBN grain through grinding test of Nickel-based superalloy. The self-sharpening effect is created by timing micro-fracture behavior for BCBN abrasive grains, but by macro-fracture behavior for PCBN abrasive grains. During grinding with brazed BCBN abrasive grains, the material is removed together with ...

Fatigue crack growth damage mechanisms for nickel-based superalloys at high, negative stress ratios challenge classical tip shielding and closure concepts. rate single-edge notch Ni-based superalloy 718 specimens 100 °C were evaluated several (0.5, 0.1, ?1, ?2). Multiple methods used to calculate the effective driving force rates in region II (i.e., Paris or power law regime). The relationships...

The realisation of employing Additive Layer Manufacturing (ALM) technologies to produce components in the aerospace industry is significantly increasing. This can be attributed to their ability to offer the near-net shape fabrication of fully dense components with a high potential for geometrical optimisation, all of which contribute to subsequent reductions in material wastage and component we...

Thermal-mechanical fatigue (TMF) tests and isothermal (IF) were conducted using thin-walled tubular specimens under strain-controlled conditions. The results of TMF showed a strong correlation between mechanical behavior temperature cycling. Under different phases loading, the hysteresis loop mean stress single crystal superalloy noticeable variations stress-controlled In test, cycling led to a...