Net-Shape NiTi Shape Memory Alloy by Spark Plasma Sintering Method

Abstract

An analysis of the shape memory effect of a NiTi alloy by using the spark plasma sintering approach has been carried out. Spark plasma sintering of Ti50Ni50 powder (20–63 µm) at a temperature of 900 °C produced specimens showing good shape memory effects. However, the sample showed 2.5% porosity due to a load of 48 MPa. Furthermore, an apparent shape memory effect was recorded and the specimens were characterized by uniformity in chemical composition and shape memory alloys of NiTi showed significant austenite phases with a bending strain recovery of >2.5%.

Anisotropic to Isotropic Transition in Monolayer Group-IV Tellurides

“…In particular, group IV-VI semiconductors with layered structures and weak van der Waals interlayer interactions allowing for isolation by mechanical exfoliation have been considered as free-standing monolayers [11][12][13][14][15][16][17]. In addition, various two-dimensional nanosheets have already been successfully synthesized using chemical vapor deposition, liquid phase exfoliation, and spark plasma sintering techniques, rendering them potentially useful candidates for large-scale manufacturing and device applications [18][19][20][21][22][23][24][25][26][27].…”

An Overview of Thermal Plasma Arc Systems for Treatment of Various Wastes in Recovery of Metals

“…Metal-containing materials fall into various categories, from waste materials to minerals. Metals are hidden resources in the waste materials generated from the day-to-day industrial production of human needs [1][2][3], such as metal-containing waste generated from electronic products, metal plants, minerals sectors, and metal-containing soils and minerals [4,5]. To utilize this waste in a valuable way, both hydro-and pyrometallurgical treatments have been proposed in industrial sectors.…”

Investigation of Microstructures and Mechanical Properties of SiC/AA2024 Nanocomposites Processed by Powder Metallurgy and T6 Heat Treatment

“…Nanocomposites often possess improved tensile properties but poor work-hardening ability due to the significant refinement of matrix grain sizes [ 4 , 7 ]. Among the material processing methods, powder metallurgy (PM) has shown great advantages in dispersing nano-reinforcements uniformly and achieving good properties [ 8 , 9 ]. A novel PM route was proposed by Fan et al [ 10 ] to fabricate strong and ductile CNT/Al composites reinforced with high-content CNTs.…”