Effects of hot-pack rolling process on microstructure, high-temperature tensile properties, and deformation mechanisms in hot-pack rolled thin Ti–44Al–5Nb-(Mo, V, B) sheets

2019 ◽  
Vol 764 ◽  
pp. 138197 ◽  
Author(s):  
T.R. Li ◽  
G.H. Liu ◽  
M. Xu ◽  
B.X. Wang ◽  
H.Z. Niu ◽  
...  
Keyword(s):  
High Temperature ◽  
Tensile Properties ◽  
Rolling Process ◽  
Deformation Mechanisms ◽  
Pack Rolling ◽  
High Temperature Tensile ◽  
High Temperature Tensile Properties ◽  
Hot Pack

Effect of CaO Addition on High Temperature Tensile Properties of Mg Casting Alloys

2009 ◽  
Vol 620-622 ◽  
pp. 291-294 ◽  
Author(s):  
Jung Ho Seo ◽  
Shae K. Kim
Keyword(s):  
Solid Solution ◽  
High Temperature ◽  
Tensile Properties ◽  
Alloy Element ◽  
Good Effect ◽  
Casting Alloys ◽  
Ca Addition ◽  
High Temperature Tensile ◽  
High Temperature Tensile Properties ◽  
Better Than

The microstructure, hardness and tensile properties of Mg-3Al, Mg-3Al-1.2Ca(AX31), Mg-3Al-1.2CaO(AO31), Mg-9Al, Mg-9Al-1.2Ca(AX91) and Mg-9Al-1.2CaO(AO91) alloys were investigated to identify the effect of CaO addition compared with Ca addition. The results show that the alloy element CaO has a good effect on high temperature tensile properties and CaO added alloys have superior high temperature performance compared with Ca added alloys. Addition of CaO results in the precipitation of Al2Ca phase (C15 phase) on the grain boundaries. This phase precipitated by the reduction of CaO leads to the refinement of a microstructure and improvement of tensile properties at elevated temperature similar to the Ca added Mg alloys. When added into molten Mg Ca makes solid solution in the Mg matrix up to 0.8wt %. But in case of CaO addition the thermally stable compound is precipitated directly without making solid solution with Mg matrix. Therefore, the high temperature tensile properties of CaO added Mg casting alloys are better than Ca added one at the same adding contents (1.2wt.%).

The Effect of Microalloying B on the High Temperature Mechanical Properties of Ti3Al

1988 ◽  
Vol 133 ◽  
Author(s):  
Joseph W. Newkirk ◽  
Gerald B. Feldewerth
Keyword(s):  
Mechanical Properties ◽  
High Temperature ◽  
Tensile Properties ◽  
Grain Refinement ◽  
High Temperature Mechanical Properties ◽  
High Temperature Tensile ◽  
High Temperature Tensile Properties

ABSTRACTThe effect of adding boron to Ti3Al on the microstructure and high temperature tensile properties has been studied. Boron caused a large grain refinement that dominated the tensile properties at all temperatures. Particles of Ti2B were found in all of the boron containing alloys. TiB was found only at concentrations of 0.1% B or more.

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