期刊
INTERNATIONAL JOURNAL OF FATIGUE
卷 142, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.ijfatigue.2020.105951
关键词
-
资金
- ASGC NASA [NNX15AJ18H]
This study characterizes the aluminum alloy AA2219 created by the solid-state additive friction stir-deposition process, determining the suitability of the as-deposited material for specific circumstances. It provides ideal process parameters for AFS-D AA2219 and characterizes the local optimal as-deposited material, laying the foundation for the technology to be used in construction of NASA's Space Launch System vehicle.
This work characterizes aluminum alloy (AA) 2219 created by use of the solid-state additive friction stir-deposition (AFS-D) process. Specifically, it determines the goodness for use in particular circumstances of as-deposited material created by varied process parameter sets as a function of microhardness and grain size measurements. It presents ideal process parameters for AFS-D AA2219 and characterizes the local optimal as-deposited material by cyclic plastic response, monotonic tensile response, microhardness, grain size, and precipitate existence. Ultimately, this work provides the foundation for the AFS-D technology to be used in construction of NASA's Space Launch System (SLS) vehicle.
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