Alloy modification of γ-base titanium aluminide for improved oxidation resistance, creep strength and fracture toughness

1992 ◽  
Vol 153 (1-2) ◽  
pp. 451-456 ◽  
Author(s):  
Seishi Tsuyama ◽  
Shinji Mitao ◽  
Kuni-nori Minakawa
Keyword(s):  
Fracture Toughness ◽  
Oxidation Resistance ◽  
Creep Strength ◽  
Titanium Aluminide

Optimization of Mo-Si-B Intermetallics

2002 ◽  
Vol 753 ◽  
Author(s):  
Joachim H. Schneibel ◽  
Peter F. Tortorelli ◽  
Matthew J. Kramer ◽  
Andrew J. Thom ◽  
Jamie J. Kruzic ◽  
...  
Keyword(s):  
Solid Solution ◽  
Fracture Toughness ◽  
Oxidation Resistance ◽  
Creep Strength ◽  
Length Scale ◽  
Phase Volume ◽  
Volume Fractions ◽  
Degree Of Oxidation

ABSTRACTMo-Si-B intermetallics consisting of the phases Mo3Si, Mo5SiB2, and α-Mo (Mo solid solution) can be designed to exhibit some degree of oxidation resistance, fracture toughness, and creep strength, but not necessarily all of these at the same time. For example, microstructures that enhance the oxidation resistance are typically associated with low fracture toughness. Examples will be given illustrating the oxidation resistance, fracture toughness, and creep strength of Mo-Si-B intermetallics as a function of their phase volume fractions as well as the topology and length scale of their microstructures. Microstructures containing either individual α-Mo particles or a continuous α-Mo matrix will be described. The examples provide possible ways to control the composition and microstructure of Mo-Si-B alloys such as to optimize the desired balance of properties.

Oxidation Resistance, Creep Strength and Room-Temperature Fracture Toughness of Mo–28Ti–14Si–6C–6B Alloy

Materialia ◽  
2021 ◽  
pp. 101108
Author(s):  
Tomotaka Hatakeyama ◽  
Alexander Kauffmann ◽  
Susanne Obert ◽  
Camelia Gombola ◽  
Martin Heilmaier ◽  
...  
Keyword(s):  
Fracture Toughness ◽  
Oxidation Resistance ◽  
Creep Strength ◽  
Room Temperature ◽  
Temperature Fracture

MO-RE 40MA

Alloy Digest ◽  
1998 ◽  
Vol 47 (12) ◽  
Keyword(s):  
High Temperature ◽  
Elevated Temperature ◽  
Physical Properties ◽  
Tensile Properties ◽  
Oxidation Resistance ◽  
Creep Strength ◽  
Heat Resistant Alloy ◽  
Resistant Alloy ◽  
Heat Resistant ◽  
Temperature Performance

Abstract MO-RE 40MA is a fully austenitic heat-resistant alloy for elevated temperature applications. The alloy is microalloyed for creep strength and oxidation resistance. This datasheet provides information on composition, physical properties, and tensile properties as well as creep. It also includes information on high temperature performance. Filing Code: Ni-548. Producer or source: Duraloy Technologies Inc.

RMI 5Al-2Zr-2Sn-4Mo-4Cr (Ti-17)

Alloy Digest ◽  
2001 ◽  
Vol 50 (8) ◽  
Keyword(s):  
Fracture Toughness ◽  
High Temperature ◽  
Physical Properties ◽  
Tensile Properties ◽  
Creep Strength ◽  
Temperature Performance

Abstract Ti-17 is an a-rich near-B alloy that is sometimes classified as an a-B alloy. Unlike other B or near-B alloys, Ti-17 offers good creep strength up to 430 C (800 F). This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness and creep. It also includes information on high temperature performance. Filing Code: TI-117. Producer or source: RMI Company.

NICROFER 6022 hMo

Alloy Digest ◽  
2019 ◽  
Vol 68 (5) ◽  
Keyword(s):  
High Temperature ◽  
Physical Properties ◽  
Tensile Properties ◽  
Oxidation Resistance ◽  
Creep Strength ◽  
Temperature Performance

Abstract Nicrofer 6022 hMo, a Ni-Cr-Mo-Nb material also called Alloy 625H, is an alloy that combines high-creep strength with excellent corrosion-oxidation resistance. This datasheet provides information on composition, physical properties, and tensile properties. It also includes information on high temperature performance as well as machining and joining. Filing Code: Ni-753. Producer or source: VDM Metals International GmbH.

scholarly journals Effects of CNT Addition on Mechanical Properties, Electric Conductivity and Oxidation Resistance of Al2O3-TiC Composite

2013 ◽  
Vol 761 ◽  
pp. 83-86
Author(s):  
Hideaki Sano ◽  
Junichi Morisaki ◽  
Guo Bin Zheng ◽  
Yasuo Uchiyama
Keyword(s):  
Mechanical Properties ◽  
Carbon Nanotubes ◽  
Fracture Toughness ◽  
Flexural Strength ◽  
Electric Conductivity ◽  
Young’S Modulus ◽  
Oxidation Resistance ◽  
Young's Modulus ◽  
Tic Particle

Effects of carbon nanotubes (CNT) addition on mechanical properties, electric conductivity and oxidation resistance of CNT/Al2O3-TiC composite were investigated. It was found that flexural strength, Young’s modulus and fracture toughness of the composites were improved by addition of more than 2 vol%-CNT. In the composites with more than 3 vol%-CNT, the oxidation resistance of the composite was degraded. In comparison with Al2O3-26vol%TiC sample as TiC particle-percolated sample, the Al2O3-12vol%TiC-3vol%CNT sample, which is not TiC particle-percolated sample, shows almost the same mechanical properties and electric conductivity, and also shows thinner oxidized region after oxidation at 1200°C due to less TiC in the composite.

scholarly journals Effects of Zirconium and Yttrium Oxide on Mechanical and Oxidation Properties of Mo–3Si–1B–1Zr–1Y2O3 (wt.%) Alloy

Coatings ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 833
Author(s):  
Zhenping Guo ◽  
Lei Wang ◽  
Cheng Wang ◽  
Qiuliang Li
Keyword(s):  
Fracture Toughness ◽  
Oxidation Resistance ◽  
Yttrium Oxide ◽  
Particle Dispersion ◽  
Second Phase ◽  
Fracture Toughness Test ◽  
Dispersion Strengthening ◽  
Fine Grain ◽  
Fine Grain Strengthening ◽  
Second Phase Particles

Mo–3Si–1B alloys with zirconium (1 wt.%) and yttrium oxide (1 wt.%) additives were fabricated by vibrating sintering techniques. The doped Mo–3Si–1B alloys consisted mainly of α-Mo, Mo3Si, and Mo5SiB2 (T2) phases. It was found that the grains were reduced, and the intermetallics particles were dispersed more homogeneously after the addition of Zr and Y2O3. The optimization in microstructure induced corresponding improvements in both fracture toughness and oxidation resistance. The predominant strengthening mechanisms were fine-grain strengthening and particle dispersion strengthening. In addition, fracture toughness test showed that the additions could improve the toughness of Mo–3Si–1B alloys, for which the toughening mechanism involved a crack trapping by α-Mo phases and extensive small second phase particles in the alloys. What should be paid attention to is the satisfactory oxidation resistance, both at medium-low temperature (800 °C) and high temperature (1200 °C) with doped additives.

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