View source for B-1900 Ni Superalloy


=Alloy Specifications and Uses=
B-1900 was a nickel based superalloy developed in the 1960's<ref name="TMS_Superalloy_History" />. Its primary use, like most superalloys, is in high temperature applications like turbine airfoils <ref name="TMS_Superalloy_Characterization" />. The nominal specifications are captured in the table below<ref name="ASM_Superalloy_Specs" />.

{| class="wikitable"
|-
! Element !! Ni !! C !! Cr !! Co !! Mo !! Fe !! Al !! B !! Ti !! Ta !! W !! Zr !! Hf
|-
| Percentage || 64 || 0.1 || 8 || 10 || 6 || - || 6 || 0.015 || 1 || 4 || - || 0.10 || 1.5 (for B-1900 + Hf only)
|} 

=Stress Strain Behavior=
Figure 1<ref name="ThermalMechanicalSuperalloys" /> shows the tensile behavior at a variety of temperatures.
[[Image:NiB-1900+Hf Tensile.png|frame|c|center|Figure 1. Stress strain behavior in tension and at various temperatures. Strain rate= 8.33e-5 s^-1.]]

Figure 2<ref name="NASA_ThermoViscoPlastic" /> shows the tensile behaviour at different temperatures.
[[Image:NiB1900+Hf_StressStrain_Temperature2.png|frame|c|center|Figure 2. Stress strain behavior in tension and at various temperatures. Strain rate= 100e-6 s^-1.]]

Figure 3<ref name="NASA_ThermoViscoPlastic" /> shows the tensile behavior at different strain rates.
[[Image:NiB-1900+Hf_Tensile_StrainRates.png|frame|c|center|Figure 3. Stress strain behavior in tension and at various strain rates. Temperature = 2060 Rankin.]]

=Fatigue Performance=
Figure 4<ref name="ThermalMechanicalSuperalloys" /> shows a strain life curve at 538 degrees Celsius. 
[[Image:NiB1900+Hf_StrainLife_Temperature.png|frame|c|center|Figure 4. Strain life behavior at various temperatures]]

Figure 5<ref name="NASA_IsoBiThermal" /> shows a strain life curve at two different temperatures and for a few different methods.
[[Image:NiB-1900+Hf_StrainLife_Methods.png|frame|c|center|Figure 5. Strain life behavior at two temperatures and with three methods: HROP - Bithermal high rate out-of-phase CCOP - Bithermal compressive creep out-of-phase TMOP - Thermo mechanical out-of-phase]]


=References=
<references>
<ref name="TMS_Superalloy_Characterization"> John J. Schirra, Christopher A. Borg and Robert W. Hatala – Pratt & Whitney, East Hartford, CT. MECHANICAL PROPERTY AND MICROSTRUCTURAL CHARACTERIZATION OF VACUUM DIE CAST SUPERALLOY MATERIALS.  http://www.tms.org/superalloys/10.7449/2004/Superalloys_2004_553_561.pdf </ref>

<ref name="TMS_Superalloy_History"> Chester T. Sims, General Electric Company. A HISTORY OF SUPERALLOY METALLURGY FOR SUPERALLOY METALLURGISTS. http://www.tms.org/superalloys/10.7449/1984/superalloys_1984_399_419.pdf </ref>

<ref name="ASM_Superalloy_Specs"> Superalloys: A Technical Guide, Chapter 1. Superalloys for High Temperatures-A Primer. http://www.asminternational.org/documents/10192/3477898/ACFAAD4.pdf/35831243-7132-4243-91a1-705e67b1cf4b </ref>

<ref name="ThermalMechanicalSuperalloys"> Norman J. Marchand. THERMAL-MECHANICAL FATIGUE BEHAVIOR OF NICKEL-BASE SUPERALLOYS. http://dspace.mit.edu/handle/1721.1/31003 </ref>

<ref name="NASA_ThermoViscoPlastic"> Ajay K. Pandey, Pramote DeChaumphai, Earl A. Thornton. FINITE ELEMENT THERMO-VISCOPLASTIC ANALYSIS OF AEROSPACE STRUCTURES. http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19910007094.pdf </ref>

<ref name="NASA_IsoBiThermal"> V.M. Radhakrishnan, Sreeramesh Kalluri, Gary R. Halford. AN ANALYSIS OF ISOTHERMAL, BITHERMAL, AND THERMOMECHANICAL FATIGUE DATA OF HAYNES 188 AND B1900+Hf BY ENERGY CONSIDERATIONS. http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19940024316.pdf </ref>

[[Category:Mechanical Properties]]
[[Category:Macroscale]]
[[Category:Nickel]]