Mechanical Behavior of Three-Dimensional Braided Nickel-Based Superalloys Synthesized via Pack Cementation |
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| Authors: | Nicolas Lippitz Dinc Erdeniz Keith W. Sharp David C. Dunand |
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| Affiliation: | 1.Institute for Materials, TU Braunschweig,Braunschweig,Germany;2.Department of Materials Science and Engineering,Northwestern University,Evanston,USA;3.TexTech Industries, Inc.,Portland,USA |
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| Abstract: | Braided tubes of Ni-based superalloys are fabricated via three-dimensional (3-D) braiding of ductile Ni-20Cr (wt pct) wires followed by post-textile gas-phase alloying with Al and Ti to create, after homogenization and aging, γ/γ′ strengthened lightweight, porous structures. Tensile tests reveal an increase in strength by 100 MPa compared to as-braided Ni-20Cr (wt pct). An interrupted tensile test, combined with X-ray tomographic scans between each step, sheds light on the failure behavior of the braided superalloy tubes. |
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