NASA-UVA Light Aerospace Alloy and Structures Technology Program (LA2ST). Progress report, 1 January-30 June 1993

Technical Report · Thu Jul 01 04:00:00 EDT 1993

OSTI ID:5875391

Gangloff, R P; Scully, J R; Stoner, G E; Thornton, E A; Wawner, Jr, F E; Wert, J A

The NASA-UVA Light Aerospace Alloy and Structures Technology (LA2ST) Program continues a high level of activity. Progress achieved between 1 Jan. and 30 Jun. 1993 is reported. The objective of the LA2ST Program is to conduct interdisciplinary graduate student research on the performance of next generation, light weight aerospace alloys, composites, and thermal gradient structures in collaboration with NASA-Langley researchers. The following projects are addressed: environmental fatigue of Al-Li-Cu alloys; mechanisms of localized corrosion and environmental fracture in Al-Cu-Li-Mg-Ag alloy X2095 and compositional variations; the effect of zinc additions on the precipitation and stress corrosion cracking behavior of alloy 8090; hydrogen interactions with Al-Li-Cu alloy 2090 and model alloys; metastable pitting of aluminum alloys; cryogenic fracture toughness of Al-Cu-Li + In alloys; the fracture toughness of Weldalite (TM); elevated temperature cracking of advanced I/M aluminum alloys; response of Ti-1100/SCS-6 composites to thermal exposure; superplastic forming of Weldalite (TM); research to incorporate environmental effects into fracture mechanics fatigue life prediction codes such as NASA FLAGRO; and thermoviscoplastic behavior.

• Research Organization: Virginia Univ., Charlottesville, VA (United States)
• OSTI ID: 5875391
• Report Number(s): N-93-31739; NASA-CR--193412; NAS--1.26:193412; UVA--528266-MS-94-113; CNN: NAG1-745
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360103* -- Metals & Alloys-- Mechanical Properties
360105 -- Metals & Alloys-- Corrosion & Erosion
360603 -- Materials-- Properties
360604 -- Materials-- Corrosion
Erosion
& Degradation
ALLOYS
ALUMINIUM ALLOYS
ALUMINIUM BASE ALLOYS
CHEMICAL REACTIONS
COMPOSITE MATERIALS
COMPUTER CODES
COPPER ALLOYS
CORROSION
DOCUMENT TYPES
EMBRITTLEMENT
F CODES
FATIGUE
FRACTURE MECHANICS
FRACTURE PROPERTIES
HYDROGEN EMBRITTLEMENT
INDIUM ALLOYS
LITHIUM ALLOYS
MAGNESIUM ALLOYS
MATERIALS
MECHANICAL PROPERTIES
MECHANICS
PROGRESS REPORT
SILVER ALLOYS
STRESS CORROSION
THERMAL INSULATION
ZINC ADDITIONS
ZINC ALLOYS