B-1900 Ni Superalloy
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Contents |
Alloy Specifications and Uses
B-1900 was a nickel based superalloy developed in the 1960's[1]. Its primary use, like most superalloys, is in high temperature applications like turbine airfoils [2]. The nominal specifications are captured in the table below[3].
| 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[4] shows the tensile behavior at a variety of temperatures.
Figure 1. Stress strain behavior in tension and at various temperatures. Strain rate= 8.33e-5 s^-1.
Figure 2[5] shows the tensile behaviour at different temperatures.
Figure 2. Stress strain behavior in tension and at various temperatures. Strain rate= 100e-6 s^-1.
Figure 3[5] shows the tensile behavior at different strain rates.
Figure 3. Stress strain behavior in tension and at various strain rates. Temperature = 2060 Rankin.
Fatigue Performance
Figure 4[4] shows a strain life curve at 538 degrees Celsius.
Figure 4. Strain life behavior at various temperatures
Figure 5[6] shows a strain life curve at two different temperatures and for a few different methods.
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
- ↑ 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
- ↑ 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
- ↑ 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
- ↑ 4.0 4.1 Norman J. Marchand. THERMAL-MECHANICAL FATIGUE BEHAVIOR OF NICKEL-BASE SUPERALLOYS. http://dspace.mit.edu/handle/1721.1/31003
- ↑ 5.0 5.1 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
- ↑ 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
