Effect of microstructure and addition of alloying elements on hydriding kinetics of Zr–Nb-based alloys

2015 ◽  
Vol 40 (47) ◽  
pp. 17118-17127 ◽  
Author(s):  
Rafaella Martins Ribeiro ◽  
Carla Brandão Woyames ◽  
Luiz Henrique de Almeida ◽  
Dilson Silva dos Santos
Keyword(s):  
Alloying Elements ◽  
Kinetics Of ◽  
Hydriding Kinetics ◽  
Effect Of Microstructure

scholarly journals Chemical reactions during sintering of Fe-Cr-Mn-Si-Ni-Mo-C-steels with special reference to processing in semi-closed containers

2015 ◽  
Vol 47 (1) ◽  
pp. 61-69 ◽  
Author(s):  
A. Cias
Keyword(s):  
Mechanical Properties ◽  
Carbon Monoxide ◽  
Special Reference ◽  
Water Vapour ◽  
Chemical Reactions ◽  
Thermodynamic Data ◽  
Alloying Elements ◽  
Bearing Steels ◽  
Kinetics Of

Sintering of Cr, Mn and Si bearing steels has recently attracted both experimental and theoretical attention and processing in semiclosed containers has been reproposed. This paper brings together relevant thermodynamic data and considers the kinetics of some relevant chemical reactions. These involve iron and carbon, water vapour, carbon monoxide and dioxide, hydrogen and nitrogen of the sintering atmospheres and the alloying elements Cr, Mn, Mo and Si. The paper concludes by presenting mechanical properties data for three steels sintered in local microatmosphere with nitrogen, hydrogen, nitrogen-5% hydrogen and air as the furnace gas.

Enhanced hydriding kinetics of Mg-10 at% Al composite by forming Al 12 Mg 17 during hydriding combustion synthesis

2017 ◽  
Vol 712 ◽  
pp. 44-49 ◽  
Author(s):  
Yanglin Zhu ◽  
Shicheng Luo ◽  
Huaijun Lin ◽  
Yana Liu ◽  
Yunfeng Zhu ◽  
...  
Keyword(s):  
Combustion Synthesis ◽  
Al Composite ◽  
Kinetics Of ◽  
Hydriding Kinetics

Hydriding kinetics of the La1.5Ni0.5Mg17–H system prepared by hydriding combustion synthesis

2004 ◽  
Vol 12 (12) ◽  
pp. 1293-1298 ◽  
Author(s):  
Q. Li ◽  
Q. Lin ◽  
K.C. Chou ◽  
L.J. Jiang ◽  
Feng Zhan
Keyword(s):  
Combustion Synthesis ◽  
Kinetics Of ◽  
Hydriding Kinetics

Influence of Cooling Rate and Alloying Elements on Kinetics of Eutectoid Transformation in Spheroidal Graphite Cast Iron

2010 ◽  
Vol 457 ◽  
pp. 163-168 ◽  
Author(s):  
Primož Mrvar ◽  
Mitja Petrič ◽  
Jožef Medved
Keyword(s):  
Cast Iron ◽  
Cooling Rate ◽  
Alloying Elements ◽  
Spheroidal Graphite ◽  
Eutectoid Transformation ◽  
Spheroidal Graphite Cast Iron ◽  
Graphite Cast Iron ◽  
Short Time ◽  
Kinetics Of

Paper deals with influence of cooling rate and alloying elements on kinetics of eutectoid transformation in spheroidal graphite cast iron (SGI). Transformation of austenite can proceed into ferrite and graphite (FeFeG) and/or in pearlite (Fe  FeFe3C). Examination of eutectoid transformation was made by evaluating the “in-situ” dilatation curves together with metallographic examinations, DTA, and dilatation analyses in solid state. ThermoCalc software was applied for thermodynamic calculations of phase equilibria. Based on numerous quantitative relations, such as relation between fractions of ferrite and pearlite in the as-cast SGI that was determined by analysis of dilatometric curves and taking into account also composition of melt, ferrite/pearlite ratio in the microstructure could be determined in a very short time. Thus the melt composition could be corrected by adding Cu and/or Mn or Si, respectively, using the "in situ" dilatation analyses. Characteristic temperatures of eutectoid transformation have been established from the kinetics of austenite transformation and from temperature dependence of ferrite and/or pearlite growth. Kinetics curves that enable to determine fractions of single microstructure constituents in the microstructure as function of transformation time, mainly used for ferrite and pearlite SGI, can be well determined with physical sigmoidal Boltzmann model.

The activation processes and hydriding kinetics of FeTi

1983 ◽  
Vol 89 (1) ◽  
pp. 163-168 ◽  
Author(s):  
Lee Jai-Young ◽  
C.N. Park ◽  
S.M. Pyun
Keyword(s):  
Kinetics Of ◽  
Hydriding Kinetics
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