Selecting high-temperature structural intermetallic compounds: The engineering approach

JOM ◽  
1989 ◽  
Vol 41 (9) ◽  
pp. 12-17 ◽  
Author(s):  
D. L. Anton ◽  
D. M. Shah ◽  
D. N. Duhl ◽  
A. F. Giamei
Keyword(s):  
High Temperature ◽  
Intermetallic Compounds ◽  
Engineering Approach ◽  
Structural Intermetallic

scholarly journals High temperature and pressure effects on the elastic properties of B2 intermetallics AgRE

Open Physics ◽  
2015 ◽  
Vol 13 (1) ◽  
Author(s):  
Lili Liu ◽  
Xiaozhi Wu ◽  
Weiguo Li ◽  
Rui Wang ◽  
Qing Liu
Keyword(s):  
High Temperature ◽  
Intermetallic Compounds ◽  
Elastic Properties ◽  
Elastic Constants ◽  
Second Order ◽  
Pressure Effects ◽  
High Temperature And Pressure ◽  
Normal Behavior ◽  
Temperature And Pressure ◽  
Temperature And Pressure Effects

AbstractThe high temperature and pressure effects on the elastic properties of the AgRE (RE=Sc, Tm, Er, Dy, Tb) intermetallic compounds with B2 structure have been performed from first principle calculations. For the temperature range 0-1000 K, the second order elastic constants for all the AgRE intermetallic compounds follow a normal behavior: they decrease with increasing temperature. The pressure dependence of the second order elastic constants has been investigated on the basis of the third order elastic constants. Temperature and pressure dependent elastic anisotropic parameters A have been calculated based on the temperature and pressure dependent elastic constants.

Fabrication of cellular NiTi intermetallic compounds

2000 ◽  
Vol 15 (1) ◽  
pp. 10-13 ◽  
Author(s):  
Bing-Yun Li ◽  
Li-Jian Rong ◽  
Yi-Yi Li ◽  
V. E. Gjunter
Keyword(s):  
High Temperature ◽  
Intermetallic Compounds ◽  
Open Porosity ◽  
Cellular Structure ◽  
Temperature Synthesis ◽  
High Temperature Synthesis ◽  
Preheating Temperature ◽  
Porosity Ratio

Self-propagating high-temperature synthesis (SHS) has been successfully developed for the fabrication of cellular NiTi intermetallic compounds, which have an open cellular structure with about 60 vol% porosity and more than 95% open-porosity ratio. The SHS reactions lead to the formation of TiNi, Ti2Ni, Ni3Ti, and Ni4Ti3 intermetallics. The SHS process can be controlled by regulating the preheating temperature, which has effects on the phase amount and the shape as well as macrodistribution of pores in the products.

Intermetallics of Aluminum

2019 ◽  
Author(s):  
Georg Frommeyer ◽  
Sven Knippscheer
Keyword(s):  
Crystal Structure ◽  
Mechanical Properties ◽  
Plastic Deformation ◽  
High Temperature ◽  
Physical Properties ◽  
Intermetallic Compounds ◽  
Oxidation Behavior ◽  
Physical And Mechanical Properties ◽  
Structural Materials

Aluminum-rich intermetallic compounds of the Al3X-type with transmission metals (X = Ti. Zr, Nb, V) of Groups IVb and Vb are of interest in the development of novel high-temperature and lightweight structural materials. This article describes the important physical and mechanical properties of trialuminides with DO22 structure and their L12 variations. Topical coverage includes: crystal structure and selected physical properties, plastic deformation, oxidation behavior, and applications.

Self-Propagating High-Temperature Synthesis of Intermetallic Compounds

1988 ◽  
pp. 557-562
Author(s):  
Yoshinari Kaieda ◽  
Minoru Otaguchi ◽  
Osamu Odawara ◽  
Morihiko Nakamura ◽  
Tadashi Oie ◽  
...  
Keyword(s):  
High Temperature ◽  
Intermetallic Compounds ◽  
Temperature Synthesis ◽  
High Temperature Synthesis

The effect of high-temperature treatment on the formation of nanoscale intermetallic compounds of transition metals in Al–Cu–Mn–Zr alloy

2018 ◽  
Vol 9 (5) ◽  
pp. 609-616
Author(s):  
Tetiana O. Monastyrska ◽  
Alla L. Berezina ◽  
Tetiana M. Labur ◽  
Oleh A. Molebny ◽  
Andrii V. Kotko
Keyword(s):  
High Temperature ◽  
Transition Metals ◽  
Intermetallic Compounds ◽  
Temperature Treatment ◽  
High Temperature Treatment ◽  
Zr Alloy

scholarly journals A System Engineering Approach Using FMEA and Bayesian Network for Risk Analysis—A Case Study

2019 ◽  
Vol 12 (1) ◽  
pp. 77 ◽  
Author(s):  
Sima Rastayesh ◽  
Sajjad Bahrebar ◽  
Frede Blaabjerg ◽  
Dao Zhou ◽  
Huai Wang ◽  
...  
Keyword(s):  
High Temperature ◽  
Risk Analysis ◽  
Leakage Current ◽  
System Engineering ◽  
Proton Exchange ◽  
Substrate Interface ◽  
Engineering Approach ◽  
Power Conditioner ◽  
High Leakage Current ◽  
Critical Components

This paper uses a system engineering approach based on the Failure Mode and Effect Analysis (FMEA) methodology to do risk analysis of the power conditioner of a Proton Exchange Membrane Fuel Cell (PEMFC). Critical components with high risk, common cause failures and effects are identified for the power conditioner system as one of the crucial parts of the PEMFCs used for backup power applications in the telecommunication industry. The results of this paper indicate that the highest risk corresponds to three failure modes including high leakage current due to the substrate interface of the metal oxide semiconductor field effect transistor (MOSFET), current and electrolytic evaporation of capacitor, and thereby short circuit, loss of gate control, and increased leakage current due to gate oxide of the MOSFET. The MOSFETs, capacitors, chokes, and transformers are critical components of the power stage, which should be carefully considered in the development of the design production and implementation stage. Finally, Bayesian networks (BNs) are used to identify the most critical failure causes in the MOSFET and capacitor as they are classified from the FMEA as key items based on their Risk Priority Numbers (RPNs). As a result of BNs analyses, high temperature and overvoltage are distinguished as the most crucial failure causes. Consequently, it is recommended for designers to pay more attention to the design of MOSFETs’ failure due to high leakage current owing to substrate interface, which is caused by high temperature. The results are emphasizing design improvement in the material in order to be more resistant from high temperature.

Chemical Compatibility of High Temperature Intermetallic Compounds with Various Potential Reinforcements

1990 ◽  
Vol 194 ◽  
Author(s):  
J.-M. Yang ◽  
S. M. Jeng ◽  
C. J. Yang ◽  
D. L. Anton
Keyword(s):  
High Temperature ◽  
Intermetallic Compound ◽  
Intermetallic Compounds ◽  
Hot Pressing ◽  
Chemical Compatibility ◽  
Diffusion Couples ◽  
Vacuum Hot Pressing

AbstractThe chemical compatibility between five high temperature intermetallic compounds and six potential reinforcements are investigated. Diffusion couples are prepared by vacuum hot pressing. The most promising reinforcements or coating for each intermetallic compound are identified.

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