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improvement of densification and microstructure of astm

(PDF) Improvement of densification and microstructure of

Improvement of densification and microstructure of HfB2 ceramics by Ta/Ti substitution for Hf. July 2019; could improve the densification, refine the microstructure, and increase the hardness

ASTM International - Training Courses - Principles of

He holds 9 primary patents dealing with materials innovations in LS dating back to 1990 and has published 250 papers in journals, conference proceedings and book chapters. He is a founding member of the ASTM F42 Technical Committee on Additive Manufacturing and currently serves on the ten-member ASTM/ISO Joint Group 51 on Terminology for AM. Dr. Boride Ceramics:Densification, Microstructure Tailoring Boride Ceramics:Densification, Microstructure Tailoring and Properties Improvement. ZHANG Guo-Jun1, ZOU Ji1,2, NI De-Wei1,2, LIU Hai-Tao1,2, KAN Yan-Mei1. (1. State Key Laboratory of High Performance Ceramics and Superfine Microstructures, Shanghai Institute of Ceramics, Shanghai 200050, China; 2. Graduate University of the Chinese Academy of

Boride Ceramics:Densification, Microstructure Tailoring

Fingerprint Dive into the research topics of 'Boride Ceramics:Densification, Microstructure Tailoring and Properties Improvement'. Together they form a unique fingerprint. Borides Engineering & DENSIFICATION AND GRAIN GROWTH OF SrO-DOPED Keywords:ZnO, varistor, SrOB Bdoping, Grain growth kinetics, Densification The grain growth kinetics in the 1, 2, 3 and 4 wt.% SrO doped ZnO was studied using the simplified phenomenological grain growth kinetics equation Gn - G 0 n = K 0 t exp(-Q/RT) together with microstructure properties and densification of the sintered samples.

Densification and microstructure of SiN-TiN ceramic

in densification and microstructure of Si 3 N 4-TiN composites also using Al 2 O 3 and Y 2 O 3 as sintering aids. The study was performed by the conventional process of pressureless sintering at 1750 ºC/1 h and 1815 ºC/1 h. EXPERIMENTAL The starting powder materials used in this study were:-Si 3 N 4 (UBE, SN-E10), TiN (H.C. Starck), Al 2 O 3 Densification behaviour and microstructure of spark plasma Aug 14, 2019 · Densification behaviour and microstructure of spark plasma sintered aluminamullite nanocomposite. Author(s):Ali Sedaghat Ahangari Hossein Zadeh 1 and Ehsan Taheri-Nassaj 2 DOI:10.1049/mnl.2018.5757 For access to this article, please select a purchase option:

Densification, Microstructure and Properties of

effect on densification and mechanical properties. Age hardening of 6711-10SiC composites led to improvement in mechanical properties. Keywords:6711Al-SiC Composites, Sintering, Densification, Microstructure, Mechanical and Tribological Properties. 1. Introduction In recent years, aluminum alloy based composites are gaining their importance for Densification/Consolidation of MoSi2-TiB2 Composites Thus, borides have been studied as a reinforcing phase and among them, TiB2 has shown to provide the best compromise in density and improvement in mechanical properties at high temperatures [4,5,6].

Effect of Rhenium addition on tungsten heavy alloys

Apr 04, 2021 · The volume of the matrix phase in the microstructure was another required feature, which was estimated from the SEM micrographs of the samples using point counting method (ASTM E562-99e1). The property of micro-hardness was evaluated using digital Vickers's hardness tester by operating at 500 g load for 10 s. Effects of Mechanical Milling and Sintering Temperature on Mechanical milling (MM) is a well-established powder production technique. The key MM parameters for obtaining tailored powder mixtures include grinding medium, rotation speed, milling time, weight ratio of ball-to-powder, milling atmosphere, and process control agent [16, 17, 18, 19].Many investigations have demonstrated that MM can effectively reduce the particle size of the powder mixtures

Formability and Microstructural - ASTM International

Mar 18, 2013 · In the present paper, the densification characteristics and formability of sintered preforms of dual-phase P/M steel and its comparison with preforms of ferritepearlite P/M steel are presented. The elemental powders of required composition were thoroughly mixed and steel compacts with different preform densities were produced by applying Improvement in Fresh, Mechanical and Microstructural Jul 17, 2020 · In this study, the effect of nano-silica (NS) and silica fume (SF) on workability, setting time, compressive strength and microstructural properties of fly ash-ground granulated blast furnace slag (FA-GGBFS) based geopolymer concrete (GPC) is investigated. Five mixtures of each containing 0.5%, 1.0%, 1.5%, 2.0% and 2.5% NS and SF are prepared for this investigation.

Materials Free Full-Text Selective Laser Melting

Current post-process heat treatments applied to selective laser melting produced Ti-6Al-4V do not achieve the same microstructure and therefore superior tensile behaviour of thermomechanical processed wrought Ti-6Al-4V. Due to the growing demand for selective laser melting produced parts in industry, research and development towards improved mechanical properties is ongoing. Microstructural Analysis for Cement Mortar with Different To study the influences of the nanomaterial upon the microstructure of the interfacial transition region of mortar that prepared with a composite binder comprising nanomaterial and to clarify its effect on the compressive strength improvement, in this study, the compressive strength, SEM analysis and XRD analysis were estimated for mortar containing different amounts of ZrO2, SiO2, Al2O3 and

Microstructural characterization of cobalt chromium (ASTM

Cobalt-chromium based alloys have been widely used to make biomedical implants for hip and knee joints. The alloy enables to manufacturing metal on metal bearing implants which have increased life and minimum wear debris generated. They have excellent corrosion resistance, wear resistance, high stiffness and high mechanical strength properties. In the past, the alloy implants have been Microstructure and Mechanical Behavior of Hot Pressed Cu Apr 19, 2016 · Using , the densification parameter (%) was calculated for the selected Cu-based alloys and presented in Table 2. It was observed the densification parameter increases with the addition of Pb significantly. For low sliding distance (0.748 and 1.2 km) the 90% Cu-10% Sn alloy gives two times higher wear rate compared to Cu-Sn-C compact.

Microstructure and Properties of Gravity Sintered 316L

Microstructure and Properties of Gravity Sintered 316L stainless steel powder was considered which would help optimize the densification of the starting material in the gravity sintering process. Most often used additives are B, FeB, CrB, (ASTM E 384-99). Physical characteristics:density/porosity and permeability, were Pressureless densification, microstructure tailoring and Apr 01, 2018 · The influence of SiC volume fraction on the densification, microstructure evolution and room-temperature properties of TH-based ceramics were examined. Average grain size of TH was refined from 13.6 down to 2.0 m. 10 vol% SiC addition contributed to densification of Ta 0.8 Hf 0.2 C-SiC (THS) composites with a relative density of 99.6%.

Vacuum Pressureless Sintering of Ti-6Al-4V Alloy with Full

Dec 18, 2017 · Ti-6Al-4V ingots with a nearly 100% density, fine and homogeneous basket-weave microstructure, and better comprehensive mechanical properties (UTS = 935 MPa, Y.S. = 865 MPa, El. = 15.8%), have been manufactured by vacuum pressureless sintering of blended elemental powders. Coarse TiH2 powder, Al powder (2, 20 m), V powder, and Al-V master alloy powder were used as Microstructure of Cross-Linked High Densification Network May 11, 2020 · To improve its strength and toughness, the coating was heat-treated at 600-1000 °C in vacuum. The results demonstrated that the microstructure of the as-sprayed coating exhibited a special structure that was denser at the regions tamped by the shot peening particles and porous at the nontamped regions.

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