Show simple item record

dc.contributor.authorMonsegue, Nivenen_US
dc.date.accessioned2014-03-14T20:31:24Z
dc.date.available2014-03-14T20:31:24Z
dc.date.issued2007-11-21en_US
dc.identifier.otheretd-02042008-071832en_US
dc.identifier.urihttp://hdl.handle.net/10919/31129
dc.description.abstract

The mechanical alloying (MA) process and hot isostatic pressing (HIP) were used to synthesize bulk amorphous Ni-Ti alloy as an alternative to the traditional methods of casting multi-component metallic alloys. Samples milled cryogenically for 10 hours provided a homogeneous lamella structure with spacing of 30-110 nm. X-ray diffraction and transmission electron microscopy studies indicated that there were alloying and amorphous phase within the layers of the MA powder prior to annealing or HIPing. The amount of amorphous phase increased with time when the milled powder was annealed at a constant temperature and with temperature when annealing time was held constant. The microhardness of the powder correspondingly increased with the amount of amorphous formed in the powders. The HIPing of the MA powder produced a close to 100% amorphous compact with some dispersion of nanocrystals in the amorphous matrix. However, densification was not achieved.

en_US
dc.publisherVirginia Techen_US
dc.relation.haspartSSS_of_Bulk_Amorphous_Ni_50at_Ti_Alloy4.pdfen_US
dc.rightsI hereby certify that, if appropriate, I have obtained and attached hereto a written permission statement from the owner(s) of each third party copyrighted matter to be included in my thesis, dissertation, or project report, allowing distribution as specified below. I certify that the version I submitted is the same as that approved by my advisory committee. I hereby grant to Virginia Tech or its agents the non-exclusive license to archive and make accessible, under the conditions specified below, my thesis, dissertation, or project report in whole or in part in all forms of media, now or hereafter known. I retain all other ownership rights to the copyright of the thesis, dissertation or project report. I also retain the right to use in future works (such as articles or books) all or part of this thesis, dissertation, or project report.en_US
dc.subjectSolid State Amorphous Reactionsen_US
dc.subjectMechanical Alloyingen_US
dc.subjectAmorphousen_US
dc.titleSOLID STATE SYNTHESIS OF BULK AMORPHOUS Ni â 50AT% Ti ALLOYen_US
dc.typeThesisen_US
dc.contributor.departmentMaterials Science and Engineeringen_US
dc.description.degreeMaster of Scienceen_US
thesis.degree.nameMaster of Scienceen_US
thesis.degree.levelmastersen_US
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen_US
thesis.degree.disciplineMaterials Science and Engineeringen_US
dc.contributor.committeechairAning, Alexander O.en_US
dc.contributor.committeememberKampe, Stephen L.en_US
dc.contributor.committeememberSchultz, Jeffery P.en_US
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-02042008-071832/en_US
dc.date.sdate2008-02-04en_US
dc.date.rdate2011-01-03
dc.date.adate2008-03-31en_US


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record