Abstract The AE44-2 magnesium alloy was fabricated via die-casting under high vacuum (denoted as HVDC-AE44-2 alloy). microstructures and mechanical properties of the aged alloys were investigated. It found that age strengthening can be achieved in alloys.The hardness, yield strengths (YS) ultimate tensile (UTS) after aging at 200 °C for 12 h (T5) increased by 8.8 HV, 30.5 MPa 22.6 MPa, respecti...

Metal casting is an industrially important manufacturing process offering a superior combination of design flexibility, productivity and cost-effectiveness, but has limitations due to filling related defects. Several semisolid processes are available capable at range solid fractions overcome this. The current communication aims review the front behaviour give new perspective gate in processing ...

Squeeze casting is a process that can produce the highest quality castings. In current study, effect of settings and in-die conditions on rejection rates studied through full-scale experimental study. Factors affecting as-cast part were investigated in study from two different viewpoints. The first was to investigate influence rate, second understand die effects rate better reasons sensitivity ...

also often required even in the posterior region. However, all-ceramic crowns pose some problems, including weak mechanieal properties and occurrence of cracks or pores in the erown that could ultimately lead to fracture oi' the restorationii'. Thus far, all-ceramic crowns have been fabricated by firing porcelain manuaNy onto a refractory die, or by casting or heat-pressing the cerarnics. Howev...

Repair welding (RW) with wire cladding is a common procedure to extend the in-service life of heavily loaded tool parts for die and mould industries 1-5 . The main advantages of repair welding are short downtime and cost efficiency compared to production of new tool part. Repair welding in general lowers the tool cost in the final part and enables higher added value to the die casting and injec...

Al-7Si-0.5Mg aluminum alloy semi-solid slurry with good spherical grains was prepared by gas induced process (GISS) and the effects of both holding time medium addition on microstructure were investigated. These two parameters have a great influence solid fraction, size sphericity grains. With increased from 85 s to 270 s, phase fraction decreased ~0.77 ~0.67, average grain ~95 μm ~225 shape fa...

The goal of this study was to evaluate the effect of using die spacers on the marginal fit of NiCr (M1) and NiCrBe (M2) alloys and commercially pure titanium (cpTi) (M3) copings cast by the lost wax technique. Using a metal matrix, 45 resin added extra hard type IV stone models were obtained for the fabrication of wax patterns under the following conditions: no die spacer (A), with one die spac...

Rods of Ni-43.5wt% Ti alloy were prepared under various casting conditions. Specimens which were melted in a cordierite crucible and cast in a phosphate-bonded investment mold had less strength and elongation than those melted in a copper crucible and cast in a phosphate-bonded investment mold. All castings exhibited superelasticity at room temperature. The upper limit of recoverable strain was...