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The Microstructure and Creep Behavior of a Boron-Modified Ti-15Al-33Nb (at%) Alloy

C.J. Cowen, Carl J. Boehlert
2006 Advanced Materials Research  

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The affect of boron (B) on the microstructure and creep behavior of a Ti-15Al-33Nb (at%) alloy was investigated. In addition to the normal constituent phases present in the monolithic alloy, the B-modified alloy contained borides enriched in titanium and niobium. These borides were present in the form of needles/laths up to 50 μm long and 10 μm wide which took up 5-9% of the volume. Constant load, tensile-creep experiments were performed in the stress range of 150-340 MPa and the temperature
more » ... ge of 650-710°C, in both air and vacuum environments. An addition of 0.5 at% B did not improve the creep resistance of the monolithic alloy, while the addition of 5 at% B significantly improved the creep resistance.
doi:10.4028/www.scientific.net/amr.15-17.976 fatcat:vqfnld2a2rbi7azfi6mol5nyvq
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C.J. Cowen, Carl J. Boehlert. "The Microstructure and Creep Behavior of a Boron-Modified Ti-15Al-33Nb (at%) Alloy." Advanced Materials Research (2006) 976-981