Oxidation behaviour of the Mo–Si–B and Mo–Si–B–Al alloys in the temperature range of 700–1300°C

2007 ◽  
Vol 15 (9) ◽  
pp. 1217-1227 ◽  
Author(s):  
Sharma Paswan ◽  
R. Mitra ◽  
S.K. Roy
Keyword(s):  
Al Alloys ◽  
Oxidation Behaviour ◽  
Temperature Range

Isothermal Oxidation Behavior of a New Directionally Solidified Ni-Base Superalloy in Air at Different Temperature

2010 ◽  
Vol 654-656 ◽  
pp. 538-541
Author(s):  
Lei Wang ◽  
Yan Huang ◽  
Zhuo Zhao ◽  
Yang Liu ◽  
Jian Tao Wu ◽  
...  
Keyword(s):  
Oxidation Resistance ◽  
Oxidation Behavior ◽  
Isothermal Oxidation ◽  
Oxidation Behaviour ◽  
Diffusion Activation Energy ◽  
Directionally Solidified ◽  
Temperature Range ◽  
Parabolic Law ◽  
Diffusion Activation ◽  
Base Superalloy

The isothermal oxidation behaviour under static atmosphere of a new directionally solidified Ni-base superalloy was investigated. The results showed that the oxidation kinetics curves of the alloy follow parabolic law in the temperature range of 750-950°C. The diffusion activation energy Q is to be about 244.86 kJ•mol-1 and the oxidation within this temperature range is mainly controlled by Cr3+ diffusion among Cr2O3 oxidation film. The oxidation resistance grade of the alloy is perfect anti-oxidation within 750-850°C, and anti-oxidation within 900-950°C. The oxidation film can be divided into TiO2, Cr2O3+TiTaO4+NiCr2O4, Al2O3 and TiN layers, from the surface to inside. Priority oxidation and the inside oxidation of Al are considered with the oxidation of Ti and the depletion of Cr, and it is the key point for the improving of oxidation resistance.

Effect of gas flow rate on oxidation behaviour of alloy 625 in wet air in the temperature range 900-1000 °C

2016 ◽  
Vol 68 (2) ◽  
pp. 159-170 ◽  
Author(s):  
P. Huczkowski ◽  
W. Lehnert ◽  
H.-H. Angermann ◽  
A. Chyrkin ◽  
R. Pillai ◽  
...  
Keyword(s):  
Flow Rate ◽  
Gas Flow ◽  
Oxidation Behaviour ◽  
Gas Flow Rate ◽  
Alloy 625 ◽  
Temperature Range

Effect of carbon content on the oxidation behaviour of FeCrAlY alloys in the temperature range 1200–1300°C

2005 ◽  
Vol 22 (3-4) ◽  
pp. 461-466 ◽  
Author(s):  
V. Kochubey ◽  
H. Al Badairy ◽  
J. Le Coze ◽  
D. Naumenko ◽  
G.J. Tatlock ◽  
...  
Keyword(s):  
Carbon Content ◽  
Oxidation Behaviour ◽  
Temperature Range

Influence of yttrium and method of fabrication on the oxidation behaviour of FeCrAl alloys at high temperature in air

1993 ◽  
Vol 35 (5-8) ◽  
pp. 901-908 ◽  
Author(s):  
F. Clemendot ◽  
J.M. Gras ◽  
J.C. Van Duysen ◽  
G. Zachariey
Keyword(s):  
High Temperature ◽  
Al Alloys ◽  
Oxidation Behaviour

Cyclic oxidation behaviour of two-phase NiCrAl alloys at 1100°C

1993 ◽  
Vol 35 (5-8) ◽  
pp. 923-929 ◽  
Author(s):  
B. Gleeson ◽  
W.H. Cheung ◽  
D.J. Young
Keyword(s):  
Cyclic Oxidation ◽  
Al Alloys ◽  
Oxidation Behaviour ◽  
Two Phase

Alloying Effect on the Microstructure and Property of Single Crystal Ni3Al Alloys

1988 ◽  
Vol 133 ◽  
Author(s):  
Zhang Jishan ◽  
Zhang Zhiya ◽  
Tang Yajun ◽  
Zhang Jinghua ◽  
Yu Yang ◽  
...  
Keyword(s):  
Single Crystal ◽  
Al Alloys ◽  
Nickel Base Superalloy ◽  
Al Alloy ◽  
Alloying Effect ◽  
Temperature Range ◽  
Cr Content ◽  
Nickel Base ◽  
Alloying Effects ◽  
Base Superalloy

ABSTRACTThe alloying effects of Cr, Zr, Ta, Nb and B on the microstructure and properties of single crystal Ni3Al alloys have been studied. The strength of the alloys has been improved markedly with promising plasticity. The 0.2% yield stress of some of these alloys is higher than that of IN713C, a typical cast nickel-base superalloy, in the temperature range from 25 to 950°C and some of them reach the strength level of advanced cast nickel-base alloys such as IN100 in the high temperature range. The creep strength of these alloys is also improved markedly. The single crystal Ni3Al alloy with a high Cr content ( 7 at-%) obviously shows an intermediate temperature low plasticity behavior. Although heat treatment can only slightly improve the strength, it can double the elongation of the alloy from 25% to 50%. In the Ni3Al monocrystal containing 1.2at%Zr there exist great amounts of the low melting point Ni5 Zr-γ eutectics around the ordinary γ/γ′ eutectics. This makes it difficult to homogenize the coarse casting structures completely.

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