An analysis of the state foundry production in world is presented, as well an Republic Belarus. The dynamics changes capacities, degree loading and volume castings for various types alloys shown. It established that structure cast products produced both Belarus constant there a change ratio volumes from alloys. development whole similar to production, however, certain time lag differences diffe...

Low fracture toughness has been a major barrier for the structural applications of cast Mg-Gd-Y-Zr alloys. In this work, tensile properties and direct-chill-cast Mg-9Gd-4Y-0.5Zr (VW94K) alloy were investigated in different conditions, including its as-cast as-homogenized states. The results show that VW94K are greatly improved after homogenization treatment due to strengthening solid solution. ...

The objective of this study is to develop a casting investment that prevents the blackening of the cast surface of noble metal alloys. The experimental investments were prepared using a gypsum-bonded investment in which the metallic powders such as boron (B), silicon (Si), aluminum (Al) and titanium (Ti) were added as oxidizing agents. An Ag-Pd-Cu-Au alloy was cast into the mold made of the pre...

Cast iron is traditionally used as a casting alloy for the manufacture of products operating in various industries. White cast irons are parts with high wear resistance due to presence their composite structure large number eutectic carbides, which located around dendrites solid solution and provide level hardness strength. The location colonies form mesh causes low ability withstand impact loa...

The microstructures of as-cast and heat-treated Co-Cr-Mo with addition of C, Si and Mn have been investigated with a focus on phase and dissolution of precipitates. The heat treatment temperatures and heating periods employed ranged from 1448 to 1548 K and 0 to 43.2 ks, respectively. The precipitates observed in the as-cast and heat-treated alloys were carbides (M23C6, eta-phase, and pi-phase) ...

Currently, liquid metal filtration in casting process is a familiar refining technology for casting process. This technique be able to exist removed the inclusions inside the melts and subsequently improves the mechanical properties of the product. Furthermore this will also improved the surface finish and tightness of cast product. This significantly reduced the rework cost. The present resear...

The present study compares castability and mechanical performance among alloys of c.p. Ti, Ti-6Al-7Nb and a newly-developed Ti-15Mo-1Bi in regard to their as-cast state. Experimental results indicate that average cast length of Ti-6Al-7Nb appears a little lower than c.p. Ti and Ti-15Mo-1Bi, although the differences are not significant. C.p. Ti has an hcp phase of lath-type morphology with serra...

The present study was undertaken to investigate the effect of aging parameters (time and temperature) on the mechanical properties of Be-and/or Zrtreated Al-Mg-Zn (7075) alloys. Ultimate tensile strength, 0.5% offset yield strength and % elongation measurements were carried out on specimens prepared from cast and heat treated 7075 alloys containing Be and/or Zr. Different aging treatment were c...

Biodegradable metals have attracted considerable attentions in recent years. Besides the early launched biodegradable Mg and Fe metals, Zn, an essential element with osteogenic potential of human body, is regarded and studied as a new kind of potential biodegradable metal quite recently. Unfortunately, pure Zn is soft, brittle and has low mechanical strength in the practice, which needs further...