STUDIES ON RESPONSE OF RAPIDLY SOLIDIFIED TI ALLOYS TO THERMOCHEMICAL TREATMENT

Award Information
Agency:
National Aeronautics and Space Administration
Branch
n/a
Amount:
$49,892.00
Award Year:
1988
Program:
SBIR
Phase:
Phase I
Contract:
n/a
Award Id:
6681
Agency Tracking Number:
6681
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
4401 Dayton-xenia Rd, Dayton, OH, 45432
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
RABI BHATTACHARYA
() -
Business Contact:
() -
Research Institute:
n/a
Abstract
TITANIUM ALLOYS ARE OF GREAT INTEREST IN THE AEROSPACE INDUSTRY BECAUSE OF THEIR SPECIFIC STRENGTH, GOOD FRACTURE RELATED BEHAVIOR AND GENERALLY BETTER CORROSION RESISTANT BEHAVIOR. THE STRENGTH AND HARDNESS OF TI ALLOYS CAN BE SIGNIFICANTLY INCREASED BY REFINING THE MICROSTRUCTURE THROUGH RAPID SOLIDIFICATION PROCESSING (RSP). ADDITIONAL REFINEMENT OF MICROSTRUCTURE AND A REDUCTION OF FORGING TEMPERATURE CAN BE ATTAINED BY TEMPORARY ALLOYING WITH HYDROGEN. A REDUCED FORGING TEMPERATURE WILL LEAD TO THE PRESERVATION OF REFINED MICROSTRUCTURE OBTAINED BY RSP. IT IS PROPOSED HERE THAT A DETAILED STUDY BE MADE OF THE RESPONSE OF SOME RAPIDLY SOLIDIFIED TI ALLOYS WITH NOVEL ADDITIVES TO HYDROGENATION AND DEHYDROGENATION. THE ALLOYS PROPOSED ARE EUTECTOID FORMERS (TI-4CU) AND COMPOUND FORMERS (TI-1.0B, 1.0C). OPTIMUM PARAMETERS FOR OBTAINING REFINED MICROSTRUCTURE WILL BE SPECIFIED THROUGH A CORRELATION OF THE OBSERVED MICROSTRUCTURE WITH THE ACCURATE MEASUREMENT OF HYDROGEN USING THE HELIUM INDUCED PROTON RECOIL DETECTION TECHNIQUE.

* information listed above is at the time of submission.

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