Grain size and microstructural features of cast superalloy K4169 were investigated under various melting and casting conditions together with the addition of grain refiners. It is found that lowering the pouring temperature and adding refiners to the melt before pouring can lead to grain refinement of matrix and improve the proportion of equiaxed grains. At a conventional pouring temperature of...

This paper presents a new technique based on dynamic X-ray radiography that can be used to assess fibre orientation during pouring of steel reinforced cementitious composites. Synthetic examples were the suitability and robustness technique, which was shown provide reliable measurements even when signal-to-noise ratio is relatively high. A study then carried out effect formwork aspect ratio, ti...

Manganese-bearing intermetallic compounds (IMCs) are important for ensuring adequate corrosion performance of magnesium-aluminium alloys and can be deleterious to mechanical if they large and/or form clusters. Here, we explore the formation Al-Mn IMCs in Mg-9Al-0.7Zn-0.2Mn produced by two industrial casting processes, high-pressure die (HPDC) direct chill (DC) casting. As Al8Mn5 starts forming ...

This paper presents a theory that supports commonsense, qualitative reasoning about the flow of liquid around slowly moving solid objects; specifically, inferring that liquid can be poured from one container to another, given only qualitative information about the shapes and motions of the containers. It shows how the theory and the problem specification can be expressed in a first-order langua...

The genus Calonectria with its Cylindrocladium asexual morphs has been subject to several taxonomic revisions in the past. These have resulted in the recognition of 116 species, of which all but two species (C. hederae and C. pyrochroa) are supported by ex-type cultures and supplemented with DNA barcodes. The present study is based on a large collection of unidentified Calonectria isolates that...

The casting quality of the coolant pump casing nuclear power plant reactor is directly related to operational reliability and safety main pump, plays a key role in integrity pressure-bearing boundary primary loop. In this paper, aiming at low impact performance sample during process plant, through using failure analysis tools like fishbone diagram from multiple dimensions such as material selec...

Recent articles predict that the quantum computing market will expand 500% by 2028. Billions of dollars are currently pouring into computer industry to build first fault-tolerant computers.

The aim of this study was to evaluate the physical properties of irreversible hydrocolloid materials poured immediately and after different storage periods. Four alginates were tested: Color Change (Cavex); Hydrogum (Zhermack); Hydrogum 5 (Zhermack); and Hydro Print Premium (Coltene). Their physical properties, including the recovery from deformation (n = 3), compressive strength (n = 3), and d...