High Temperature Properties of Ti3SiC2-SiC Composites

2010 ◽  
Vol 105-106 ◽  
pp. 222-225
Author(s):  
De Gui Zhu ◽  
Hui Yi Tang ◽  
Hong Liang Sun ◽  
Shuang Quan Guo
Keyword(s):  
Tensile Strength ◽  
High Temperature ◽  
Composite Materials ◽  
Hot Isostatic Pressing ◽  
In Situ Synthesis ◽  
Secondary Creep ◽  
High Tensile Strength ◽  
Sic Composites ◽  
Creep Regime

Fully dense Ti3SiC2-64vol.%SiC(0.5m) composite materials are successfully fabricated by in situ synthesis under hot isostatic pressing. The high temperature flexure, tension and creep of Ti3SiC2-SiC composites were studied, and the results indicated that the composite had a high tensile strength under high temperature. Above 1000°C the composite were displayed a good high temperature plastic. The creep behavior is characterized by two regimes: an initial transient regime, where έ(dε/dt) decreases with t (time); a secondary creep regime in which έ is more or less constant with time.

VASCO 9-4-20

Alloy Digest ◽  
1997 ◽  
Vol 46 (10) ◽  
Keyword(s):  
Fracture Toughness ◽  
Tensile Strength ◽  
High Temperature ◽  
Ultimate Tensile Strength ◽  
Physical Properties ◽  
Tensile Properties ◽  
Heat Treating ◽  
High Tensile Strength ◽  
Temperature Performance

Abstract Vasco 9-4-20 (0.20 wt% C) is a premium quality aircraft steel that combines high tensile strength with good fracture toughness. It is a heat-treatable alloy capable of developing an ultimate tensile strength greater than 190 ksi. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness. It also includes information on high temperature performance as well as heat treating, machining, and joining. Filing Code: SA-489. Producer or source: Vasco, An Allegheny Teledyne Company.

Biaxial Thermal Creep of Alloy 617 and Alloy 230 for VHTR Applications

2014 ◽  
Author(s):  
Kun Mo ◽  
Wei Lv ◽  
Hsiao-Ming Tung ◽  
Di Yun ◽  
Yinbin Miao ◽  
...  
Keyword(s):  
High Temperature ◽  
Thermal Creep ◽  
Secondary Creep ◽  
Alloy 617 ◽  
Creep Equation ◽  
Creep Stress ◽  
High Temperature Mechanical Properties ◽  
Inconel 617 ◽  
Creep Regime ◽  
Secondary Regime

In this study, we employed pressurized creep tubes to investigate the biaxial thermal creep behavior of Inconel 617 (Alloy 617) and Haynes 230 (Alloy 230). Both alloys have been considered to be the primary candidate structural materials for very high temperature reactors (VHTRs) due to their exceptional high-temperature mechanical properties. The current creep experiments were conducted at 900°C for the effective stress range of 15–35 MPa. For both alloys, complete creep strain development with primary, secondary, and tertiary regimes were observed in all studied conditions. The tertiary creep was found to be dominant in the entire creep lives of both alloys. With increasing applied creep stress, the fraction of the secondary creep regime decreases. The nucleation, diffusion, and coarsening of creep voids and carbides on grain boundaries was found to be the main reason for the limited secondary regime, and was also found to be the major cause of creep fracture. The creep curves computed using the adjusted creep equation of the form ε = Aσ cosh−1(1 + rt) + Pσntm agree well with the experimental results for both alloys at the temperatures of 850–950°C. Paper published with permission.

scholarly journals In-Situ Synthesis and Property Evaluation of High-Density Polyethylene Reinforced Groundnut Shell Particulate Composite

2021 ◽  
Vol 6 (4) ◽  
pp. 305-311
Author(s):  
Abdulmumin Adebisi ◽  
Tajudeen Mojisola ◽  
Umar Shehu ◽  
Muhammed Sani Adam ◽  
Yusuf Abdulaziz
Keyword(s):  
Tensile Strength ◽  
Water Absorption ◽  
Impact Energy ◽  
High Density Polyethylene ◽  
In Situ Synthesis ◽  
High Density ◽  
Compression Moulding ◽  
Melt Mixing ◽  
Groundnut Shell

In-situ synthesis of high-density polyethylene (HDPE) reinforced groundnut shell particulate (GSP) composite with treated GSP within the range of 10-30 wt% at 10 wt% has been achieved. The adopted technique used in the production of the composite is melt mixing and compounding using two roll mills with a compression moulding machine. Properties such as hardness, tensile strength, impact energy and water absorption analysis were examined. The result revealed that addition of GSP increases the hardness value from 22.3 to 87 Hv. However, the tensile strength progressively decreased as the GSP increases in the HDPE. This trend arises due to the interaction between neighbouring reinforced particulate which appears to influence the matrix flow, thereby inducing embrittlement of the polymer matrix. It was also observed that water absorption rate steadily increased with an increase in the exposure time and the absorbed amount of water increases by increasing the wt% of the GSP. Analysing the obtained results, it was concluded that there were improvements in the hardness, tensile strength, impact energy and water absorption properties of the HDPE-GSP polymer composite when compared to unreinforced HDPE. On these premises, GSP was found as a promising reinforcement which can positively influence the HDPE properties of modern composites.

In-situ synthesis of AlON reinforcing phases in resin bonded Al 2 O 3 composite materials

2017 ◽  
Vol 711 ◽  
pp. 1-7 ◽  
Author(s):  
Haixia Qin ◽  
Yong Li ◽  
Peng Jiang ◽  
Wendong Xue ◽  
Shanghao Tong ◽  
...  
Keyword(s):  
Composite Materials ◽  
In Situ Synthesis

Facile in situ synthesis of zeolite-encapsulating Cs2SiF6:Mn4+ for application in WLEDs

2019 ◽  
Vol 7 (5) ◽  
pp. 1345-1352 ◽  
Author(s):  
Suqian Meng ◽  
Yayun Zhou ◽  
Wei Wan ◽  
Shi Ye ◽  
Qinyuan Zhang
Keyword(s):  
High Temperature ◽  
Luminous Efficiency ◽  
In Situ Synthesis ◽  
Stability Test ◽  
High Humidity ◽  
The One ◽  
Testing Condition

Stability test shows that the luminous efficiency of WLED with CSFM-Y reduces only 4% after duration of 120 h in the testing condition of high humidity (85%) and high temperature (85 °C), while the one with pure CSFM declines 28%.

In situ synthesis of SBA-3/cotton fiber composite materials: A hybrid device for CO2 capture

2012 ◽  
Vol 151 ◽  
pp. 157-162 ◽  
Author(s):  
Kun Kun Han ◽  
Li Ma ◽  
Hui Min Zhao ◽  
Xun Li ◽  
Yuan Chun ◽  
...  
Keyword(s):  
Composite Materials ◽  
Co2 Capture ◽  
Cotton Fiber ◽  
Fiber Composite ◽  
In Situ Synthesis ◽  
Hybrid Device ◽  
Fiber Composite Materials
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