Effects of Tantalum on Microstructure Evolution and
The white area obviously forms in a lamellar colony when the contents of Ta are 0.8 and 1.0 . The Ti 2 AlC phase becomes bright and there are some black regions between lamellar colonies in the Ti46Al8Nb2.6CxTa alloys. To accurately research the effect of Ta on the microstructure the lamellar colony sizes were measured by using a linear intercept method (such as Figure 1(c)) and the average
Get Price
(PDF) Effect of Liquid Phase Sintering on Microstructure
J. Am. Ceram. Soc. 88 5 1115–1121 (2005) DOI 10.1111/j..2005.00212.x Journal Effect of Liquid Phase Sintering on Microstructure and Mechanical Properties of Yb2O3-AlN Containing SiC-Based Ceramics V. A. Izhevskyi Institute for Problems in Materials Science National Academy of Sciences of Ukraine Kiev Ukraine A. H. A. Bressianiw and J. C. Bressiani Instituto de Pesquisas
Get Price
Effect of (Tb Y)/Al ratio on Microstructure Evolution and
The effect of (Tb Y)/Al ratio on the phase formation densification process and microstructure evolution was elaborately investigated. 2. Materials and Methods 2.1. Experimental Procedure (Tb0.6Y0.4)3Al5O12 transparent ceramics with different (Tb Y)/Al mole ratios (0.5964 0.6000
Get Price
Effect of SiC nanoparticles on the precipitation behavior
Therefore the presence of SiC particles at grain boundary could have an impact on final grain size due to pinning effect and evolution of grain boundary precipitates.
Get Price
Effect of solidification rate on microstructure evolution
Effect of solidification rate on microstructure evolution in dual phase microalloyed steel . Abstract . In steels the dependence of ambient temperature microstructure and mechanical properties on solidification rate is not well reported. In this work we investigate the microstructure and hardness
Get Price
Effect of annealing on microstructure and phase evolution
Jan 01 2010 · Read "Effect of annealing on microstructure and phase evolution of Ag6Mo10O33 nanorods synthesised by novel soft chemical method International Journal of Nanotechnology" on DeepDyve the largest online rental service for scholarly research with thousands of academic publications available at your fingertips.
Get Price
Microstructure and properties tailoring of liquid-phase
Evolution of microstructure in particular of the grain morphology occurring due to transformation-controlled grain growth was followed by SEM. The degree of b-SiC to a-SiC phase transformation was measured by means of quantitative XRD using internal standard technique.
Get Price
Effects of Si and Oxide Additives on Phase Evolution
The effects of additives and reinforcements on phase evolution microstructure and mechanical properties are discussed. From XRD and SEM analysis of sintered pellets the presence of molybdenum silicide (i.e. Mo 3 Si Mo 5 Si 3 and MoSi 2) in all the cermets is confirmed. It has been observed that the relative density and hardness values are
Get Price
Effect of laser parameters on microstructure and phase
Sep 01 2020 · Evolution of phase and microstructure with change of laser parameters the densification process and the manipulation of defects are some of the unexplored problems. Therefore this paper investigated the SLM process of the blended Ti-SiC powder. The microstructure and phase evolution mechanism during the SLM process were discussed.
Get Price
High‐temperature phase and microstructure evolution of
has been shown that the particle size of SiC has important effects on the microstructure and mechanical property of ZrB 2–SiC composites. 10 11 Thus nano-sized silicon-contain-ing additives are expected to have beneficial effects on the structural features and performance of
Get Price
Effects of B4C on the microstructure and phase
Nov 01 2015 · Based on the microstructure observation and the phase evolution of SiC the nucleation and growth of plate-like 4H–SiC grains were dependent on excessive B 4 C in local regions. 4H–SiC nucleation may originate at the SiC particles combined with B 4 C particles resulting in excessive B 4 C in the local regions.
Get Price
Effect of cooling rate and isothermal temperature on the
To study the effect of isothermal temperature and cooling rate on the phase transformation and microstructure evolution in SWRH82B steels a thermal dilatometer was used in this study to generate the static continuous cooling transformation (CCT) and isothermal-transformation thermal-expansion diagrams. In addition scanning electron microscopy was used to analyze the effect of process
Get Price
Effect of SiC p Addition on Microstructure and Mechanical
Microstructure showed that the grain of ZTA ceramics had directional growth by microwave sintering. SiC p firstly absorbed microwave that made more uniform sintering of ZTA ceramics and caused local oriented growth of zirconia and alumina. Thus the bending strength of ZTA ceramics was higher than ZTA without SiC p.
Get Price
Effects of SiC content on phase evolution and corrosion
Jul 01 2019 · The microstructure was dense uniform and the addition of SiC obviously refined the solidification microstructure of the MMCs. In the 16 wt SiC dispersed MMCs a micro-crack can be clearly observed. The microhardness of MMCs increased obviously from 362
Get PriceEffect of SiC on Microstructure Phase Evolution and
Ultra-high temperature ceramic composites have been widely investigated due to their improved sinterability and superior mechanical properties compared to monolithic ceramics. In
Get Price
Effect of C addition on the magnetic properties phase
The effect of C addition on the magnetic properties phase evolution and microstructure of Hf-containing SmCo 7- x Hf x ( x=0.1-0.3) ribbons via a melt spinning technique under sufficient supercooling conditions has been investigated. A small amount of C addition not only effectively refines the grain size from nm for C-free to 20-60 nm for C addition but also brings extremely fine
Get Price
High‐temperature phase and microstructure evolution of
Apr 12 2020 · High‐temperature phase and microstructure evolution of polymer‐derived SiZrCN and SiZrBCN ceramic nanocomposites. it has been shown that the particle size of SiC has important effects on the microstructure and mechanical property of ZrB 2 –SiC composites. 10 the band of SiC phase appeared. In addition
Get PriceHigh‐temperature phase and microstructure evolution of
Apr 12 2020 · High‐temperature phase and microstructure evolution of polymer‐derived SiZrCN and SiZrBCN ceramic nanocomposites. it has been shown that the particle size of SiC has important effects on the microstructure and mechanical property of ZrB 2 –SiC composites. 10 the band of SiC phase appeared. In addition
Get Price
The effect of SiC substrate microstructure and impurities
The effect of SiC substrate microstructure and impurities on the phase formation in carbide-derived carbon Vladislav Ischenko a Yeon-Suk Jang b Martina Kormann c Peter Greil b Nadejda Popovska c Cordt Zollfrank b Jo¨rg Woltersdorf a 1 a Max-Planck-Institute for Microstructure Physics Weinberg 2 D-06120 Halle Germany b University of Erlangen-Nuremberg Department of Materials Science
Get Price
Effect of Nano-SiC on Microstructure and Mechanical
Microstructure Evolution of TiB 2 /7075 Composites in Semi-Solid State near Liquids within Holding Time p.127. Effect of Nano-SiC on Microstructure and Mechanical Properties of AZ91 Magnesium Alloy Processed by Thixomolding p.133. Evolution of Microstructure and Mechanical Properties of Semi-Solid Squeeze Cast A356.2 Aluminum Alloy during Heat
Get PriceEffect of SiC on Microstructure Phase Evolution and
Effect of SiC on Microstructure Phase Evolution and Mechanical Properties of Spark-Plasma-Sintered High-Entropy Ceramic Composite 1. Introduction. High-entropy ceramics (HECs) that are manufactured from multiple ceramic
Get Price
Microstructure inheritance of matrixes of SiC f /Ti6242
SiC f /Ti composite owns the attractive advantages of lightweight and excellent high-temperature performance which make it have great significance to the development of aerospace industry. However the complicated fabrication route and novel architecture of SiC f /Ti composite bring about more difficulties for controlling its microstructure. In this work the method of regulating the
Get PricePhase evolution and microstructure of high J c SiC doped
Abstract. We report the phase evolution microstructure and critical current density (J c) of the SiC doped MgB 2 superconductors. In our study all samples were fabricated by hot pressing with a heating rate of 200 °C min-1.The results show that the reaction of 2Mg SiC = Mg 2 Si C can occur at about 500 °C about 50 °C lower than the formation temperature of MgB 2.
Get Price
Densification Mechanism and Microstructural Evolution of
The effect of these interphase layers on microstructure mechanical and thermal properties of SiC/SiC composites was investigated.The densities of SiC/SiC composites in this study attained to
Get Price
ect of SiC on Microstructure Phase Evolution and
E ect of SiC on Microstructure Phase Evolution and Mechanical Properties of Spark-Plasma-Sintered High-Entropy Ceramic Composite Hanzhu Zhang and Farid Akhtar Division of Materials Science Luleå University of Technology 97187 Luleå Sweden hanzhu.zhang ltu.se Correspondence farid.akhtar ltu.se
Get Price
(PDF) Porous process and its effects on the microstructure
Both SiC and M2C3 are strong bonded with Mg with coherent boundary. The mechanism of microstructure evolution has been discussed. Keywords Ceramics Sintering Microstructure
Get PriceEffect of Forging Temperature on Microstructure Evolution
That is a granular GB α phase was formed in the samples forged at 700 and 750°C. Moreover a film-like GB α phase was formed in the samples forged at 800 and 850°C. The tensile strength was the same for all the tested samples indicating that the microstructure has little effect on the tensile strength.
Get Price
Compositional effect of Zr-containing ceramic on phase and
Compositional effect of Zr-containing ceramic on phase and microstructural evolution of Ti–SiC laser clad coatings. Scanning electron microscopy and energy dispersive spectroscopy were used to study the microstructure of the coatings while X-ray diffractometry was utilised to investigate the existing phases on the coatings.
Get Price
Effect of cooling rate and isothermal temperature on the
To study the effect of isothermal temperature and cooling rate on the phase transformation and microstructure evolution in SWRH82B steels a thermal dilatometer was used in this study to generate the static continuous cooling transformation (CCT) and isothermal-transformation thermal-expansion diagrams. In addition scanning electron microscopy was used to analyze the effect of process
Get Price
