Author: Barry L. Mordike
Publisher:
ISBN:
Category : Alloys
Languages : en
Pages : 48
Book Description
The critical resolved shear stress of tantalum base alloys was measured from -196C to 300C and of niobium base alloys from -196C to 1800C. The behavior at low temperatures is complex. Certain features can, however, be recognized as significant: Both indirect and direct interactions contribute to the critical resolved shear stress. At high temperatures solid solution hardening is associated with an elastic interaction between solute atoms and dislocations. The modulus misfit parameter is more important than the size misfit parameter in describing the hardening.
Mechanical Properties of Tantalum and Niobium Base Alloys
Author: Barry L. Mordike
Publisher:
ISBN:
Category : Alloys
Languages : en
Pages : 48
Book Description
The critical resolved shear stress of tantalum base alloys was measured from -196C to 300C and of niobium base alloys from -196C to 1800C. The behavior at low temperatures is complex. Certain features can, however, be recognized as significant: Both indirect and direct interactions contribute to the critical resolved shear stress. At high temperatures solid solution hardening is associated with an elastic interaction between solute atoms and dislocations. The modulus misfit parameter is more important than the size misfit parameter in describing the hardening.
Publisher:
ISBN:
Category : Alloys
Languages : en
Pages : 48
Book Description
The critical resolved shear stress of tantalum base alloys was measured from -196C to 300C and of niobium base alloys from -196C to 1800C. The behavior at low temperatures is complex. Certain features can, however, be recognized as significant: Both indirect and direct interactions contribute to the critical resolved shear stress. At high temperatures solid solution hardening is associated with an elastic interaction between solute atoms and dislocations. The modulus misfit parameter is more important than the size misfit parameter in describing the hardening.
The Engineering Properties of Tantalum and Tantalum Alloys
Author: F. F. Schmidt
Publisher:
ISBN:
Category : Tantalum
Languages : en
Pages : 134
Book Description
This report presents the results of a state-of-the-art survey covering tantalum and seven of its alloys. All data are given in tabular and graphical form covering some of the more important physical, mechanical, and metallurgical properties for each material. References are given at the conclusion of each material section.
Publisher:
ISBN:
Category : Tantalum
Languages : en
Pages : 134
Book Description
This report presents the results of a state-of-the-art survey covering tantalum and seven of its alloys. All data are given in tabular and graphical form covering some of the more important physical, mechanical, and metallurgical properties for each material. References are given at the conclusion of each material section.
Tantalum and Tantalum Alloys
Author: F. F. Schmidt
Publisher:
ISBN:
Category : Tantalum
Languages : en
Pages : 344
Book Description
Publisher:
ISBN:
Category : Tantalum
Languages : en
Pages : 344
Book Description
Physical and Mechanical Properties of Columbium and Columbium-base Alloys
Author: E. S. Bartlett
Publisher:
ISBN:
Category : Niobium
Languages : en
Pages : 72
Book Description
Publisher:
ISBN:
Category : Niobium
Languages : en
Pages : 72
Book Description
Physical and Mechanical Properties of Tantalum
Author: H. R. Ogden
Publisher:
ISBN:
Category : Tantalum
Languages : en
Pages : 22
Book Description
Publisher:
ISBN:
Category : Tantalum
Languages : en
Pages : 22
Book Description
Fundamental and Applied Research and Development in Metallurgy
Author: E. J. Rapperport
Publisher:
ISBN:
Category : Alloys
Languages : en
Pages : 80
Book Description
Publisher:
ISBN:
Category : Alloys
Languages : en
Pages : 80
Book Description
Niobium, Tantalum, Molybdenum and Tungsten
Author: University of Sheffield. Department of Metallurgy
Publisher:
ISBN:
Category : Molybdenum
Languages : en
Pages : 430
Book Description
Publisher:
ISBN:
Category : Molybdenum
Languages : en
Pages : 430
Book Description
The Science and Technology of Tungsten, Tantalum, Molybdenum, Niobium and Their Alloys
Author: North Atlantic Treaty Organization. Advisory Group for Aeronautical Research and Development
Publisher:
ISBN:
Category : Confrences
Languages : en
Pages : 612
Book Description
Publisher:
ISBN:
Category : Confrences
Languages : en
Pages : 612
Book Description
Effect of Alloying on the Mechanical Properties of Cast Tantalum
Author: M. A. Tylkin
Publisher:
ISBN:
Category :
Languages : en
Pages : 18
Book Description
The effect of alloying with Ti, Zr, V, Nb, Cr, Mo, W, Re, Co, or Ni on the mechanical properties of cast tantalum have been investigated. The hardness of unalloyed tantalum drops with increasing purity. Alloying, as a rule, increased hardness and strength, but reduced ductility. Cobalt and nickel produce the sharpest increase in hardness; titanium and niobium had practically no effect. The best combination of properties was achieved by alloying with tungsten, molybdenum, or rhenium, which raises the room temperature strength of the alloy while maintaining sufficient ductility. At 1500 and 1800C, the strength of tantalum-tungsten and tantalum-rhenium alloys is 2-3 times higher than that of unalloyed tantalum. The maximum strength of tantalum-niobium alloy is attained at a niobium content of 30-40 percent; in this case, however, the alloy elongation drops to 18-20 percent and the reduction of area to 38-47 percent. Tantalum-niobium alloy has good formability at room temperature regardless of the amount of components. (Author).
Publisher:
ISBN:
Category :
Languages : en
Pages : 18
Book Description
The effect of alloying with Ti, Zr, V, Nb, Cr, Mo, W, Re, Co, or Ni on the mechanical properties of cast tantalum have been investigated. The hardness of unalloyed tantalum drops with increasing purity. Alloying, as a rule, increased hardness and strength, but reduced ductility. Cobalt and nickel produce the sharpest increase in hardness; titanium and niobium had practically no effect. The best combination of properties was achieved by alloying with tungsten, molybdenum, or rhenium, which raises the room temperature strength of the alloy while maintaining sufficient ductility. At 1500 and 1800C, the strength of tantalum-tungsten and tantalum-rhenium alloys is 2-3 times higher than that of unalloyed tantalum. The maximum strength of tantalum-niobium alloy is attained at a niobium content of 30-40 percent; in this case, however, the alloy elongation drops to 18-20 percent and the reduction of area to 38-47 percent. Tantalum-niobium alloy has good formability at room temperature regardless of the amount of components. (Author).
Niobium, Molybdenum, Tantalum and Tungsten
Author: R. Syre
Publisher:
ISBN:
Category : Heat resistant alloys
Languages : en
Pages : 210
Book Description
Publisher:
ISBN:
Category : Heat resistant alloys
Languages : en
Pages : 210
Book Description