Thermal cycling of a platinum modified, nickel aluminide (Ni,Pt)Al coated single crystal superalloy, between 1000 and 1150 C with 10 min holds at each temperature, and subject to a compressive uniaxial stress is reported. There are two major effects of the superimposed compressive stress not observed in the absence of the stress. One is that the rumpling pattern exhibits an asymmetry with an in...

Secondary phases, such as laves and carbides, are formed during the final solidification stages of nickel-based superalloy coatings deposited during the gas tungsten arc welding cold wire process. However, when aged at high temperatures, other phases can precipitate in the microstructure, like the γ'' and δ phases. This work presents an evaluation of the powerful optimum path forest (OPF) class...

The fatigue-limit model studied here contains an unknown fatigue limit parameter. Under this model, specimens tested below this fatigue-limit level of stress will never fail. The model also allows the standard deviation of fatigue life to be a function of stress. Researchers can use this model to describe the standard deviation and stress dependence in fatigue data. To illustrate its applicatio...

Superalloys are a group of alloys developed for use during long-term heat exposure above 650 °C. Properties and applications superalloys described in the present work. The work includes statis-tics about demand, market value current price. Division according to basic element is mentioned. Nickel-based further divided into two groups accord-ing their use. Afterwards, paper focused mainly on nic...

Precipitation of γ’ phase in nickel-base superalloy IN792-5A was studied using in-situ Small Angle Neutron Scattering (SANS). It was found that additional precipitates are formed after reheating above 600 ̋C when the material is previously fast cooled (100 K/min) from 900 ̋C. The size distribution and volume fraction of the additional γ’ precipitates as well as of the already present medium-siz...

Nickel-based superalloys belong to a special class of high-performance alloys that feature large amounts nickel. The uniqueness lies in their design features, most notably mechanical strength, durability, etc. Inconel 718 (IN718) is nickel-based superalloy exhibits high tensile and impact-resistant properties, along with good high-temperature corrosion resistance. Selective Laser Melting (SLM) ...