The Effects of Dislocation Dissociation and Dislocation     Core Structure on Plastic Flow in Ordered Alloys
{'Code': '03070004', 'Directorate': {'LongName': 'Direct For Mathematical & Physical Scien'}, 'Division': {'LongName': 'Division Of Materials Research'}}
{'SignBlockName': 'Bruce A. MacDonald'}
This research consists of a three year study of the plastic                deformation properties of intermetallic compounds.  This study                  combines theoretical and experimental investigations of how                     dissociation within the "core" of a dislocation controls the                    plastic deformation processes of hexagonal close packed ordered                 compounds such as Ti3Al.  Experimental studies of single crystal                Mn3Sn examines such properties as: active slip systems, critical                resolved shear stress as a function of temperature, and                         strengthening mechanisms.  Atomistic modeling of these plastic                  deformation processes involves application of the embedded atom                 method.
[{'FirstName': 'David', 'LastName': 'Pope', 'EmailAddress': 'pope@seas.upenn.edu', 'StartDate': '07/15/1989', 'EndDate': None, 'RoleCode': 'Principal Investigator'}, {'FirstName': 'Vaclav', 'LastName': 'Vitek', 'EmailAddress': 'vitek@seas.upenn.edu', 'StartDate': '07/15/1989', 'EndDate': None, 'RoleCode': 'Co-Principal Investigator'}]
{'Name': 'University of Pennsylvania', 'CityName': 'Philadelphia', 'ZipCode': '191046205', 'PhoneNumber': '2158987293', 'StreetAddress': 'Research Services', 'CountryName': 'United States', 'StateName': 'Pennsylvania', 'StateCode': 'PA'}
{'Code': '1771', 'Text': 'METAL & METALLIC NANOSTRUCTURE'}
{'url': 'https://www.nsf.gov/awardsearch/download?DownloadFileName=1988&All=true', 'xml': '8822858.xml'}