... N 4 ) , as a sintering aid, was rapidly consolidated using P 2 C ® to inhibit grain growth and ensure high strength and ductility of the consolidated material. The consolidated specimens were 93.5% of theoretical density. The microstructure of the consolidated material was characterized using...

... with a thermoplastic binder, followed by a debinding stage that permits to evacuate the polymeric binder, and then followed by a sintering stage by solid state diffusion that normally leads to a nearly dense component. The main defects arising during MIM processing are associated with powder segregation during...

... as samples in this study were prepared by a standard solid-state reaction. X-ray powder diffraction (XRD) method was used to determine the crystal structures of the sintered samples. To detect any phase change between room temperature and 1273 K , thermal mechanical analysis (TMA) was conducted. To determine...

...Shufeng Li; Hiroshi Izui; Michiharu Okano This paper discusses the dependence of the mechanical properties and microstructure of sintered hydroxyapatite (HA) on the sintering temperature and pressure. A set of specimens was prepared from as-received HA powder and sintered by using a spark plasma...

...S. F. Hassan; M. Gupta Nano- Y 2 O 3 particulates containing ductile magnesium nanocomposites were synthesized using blend-press-sinter powder metallurgy technique followed by hot extrusion. Microstructural characterization of the nanocomposite samples showed fairly uniform reinforcement...

...Sanjay Kumar Thakur; K. Balasubramanian; Manoj Gupta In the present study, monolithic magnesium, nanosized SiC reinforced magnesium and nanosized hybrid ( Si C + Al 2 O 3 ) reinforced magnesium materials have been synthesized by using powder metallurgy route involving microwave sintering followed...

...C. L. Xie; M. Hailat; X. Wu; G. Newaz; M. Taya; B. Raju The aluminum matrix composite reinforced by short NiTi shape memory alloy fibers, Ni Ti ∕ Al 6061 composite, was fabricated using pressure-assisted sintering process in ambient air. Surface preparation and thermal pretreatment of NiTi fibers...

...R. Narayanasamy; V. Senthilkumar; K. S. Pandey Experiments were carried out to evaluate the hot forging features in the high-strength sintered Powder Metallurgy TiC composite steel performs under different stress states, namely, plane and triaxial stress. Cylindrical compacts with aspect ratios...

...N. Selvakumar; R. Narayanasamy Cold upsetting experiments were carried out on sintered Al–Fe preforms in order to evaluate their deformation characteristics. The effects of iron content and initial fractional density of the preforms on deformation behavior have been investigated thoroughly by using...

...Stuart Barnes; Michael J. Nash; Y. K. Kwok A 1200 W diode laser was used to modify the surface properties of a fully-sintered ferrous PM material. Two modifications were investigated; transformation hardening of selected areas and sealing of surface porosity by re-melting. The diode laser was used...

...Lennart Ma¨hler; Kenneth Runesson Constitutive modeling and related numerical issues in conjunction with the macroscopic analysis and simulation of cold compaction and subsequent solid phase sintering of hard-metal are discussed. A key ingredient is the concept of sintering stress , which...

...H. G. Kim; H. M. Lee; K. T. Kim, Professor Assoc. Mem. ASME Near-net-shape forming of zirconia powder was investigated under the combination of cold die and isostatic pressing and pressureless sintering. A combination pressing technique, i.e., die compaction under cold isostatic pressing, allowed...