Towards mechanism-based constitutive modelling of L1₂ crystal plasticity
Name
54055603-MIT.pdf
Description
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3.7 MB
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310059859a01a193ee15b05779ff2dd4
Author(s)
Yin, Yuan, 1977-
Advisor(s)
David M. Parks.
Date Issued
2003
Publisher
Massachusetts Institute of Technology
Abstract
A single-crystal plasticity model of the L12 structure intermetallic compound Ni3Al
is developed, in light of recent theoretical developments and experimental evidence.
Computational results show that the model is capable of predicting the major anomalous
mechanical behaviors of L12 structures, including increase of yield strength with
increasing temperature, strong orientation dependence of the yield stress, tensioncompression
asymmetry, and small strain rate sensitivity.
Some ideas on revising the plasticity model have been presented. Though not
completed, the new approach points to promising future directions in simulating both
the yield behavior and the strain hardening properties of L12 compounds.
Description
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2003.
Includes bibliographical references (leaves 83-85).
Subjects
Mechanical Engineering.
MIT Department
Massachusetts Institute of Technology. Department of Mechanical Engineering
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