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| DOI | 10.2172/10169268 |
| 报告编号 | DOE/ER/45364--T4 |
| 来源ID | OSTI_ID: 10169268 |
| Theory of nonlinear, distortive phenomena in solids: Martensitic, crack, and multiscale structures-phenomenology and physics. Progress summary, 1991--1994 | |
| Sethna, J.P.; Krumhansl, J.A. | |
| 英文摘要 | We have identified tweed precursors to martensitic phase transformations as a spin glass phase due to composition variations, and used simulations and exact replica theory predictions to predict diffraction peaks and model phase diagrams, and provide real space data for comparison to transmission electron micrograph images. We have used symmetry principles to derive the crack growth laws for mixed-mode brittle fracture, explaining the results for two-dimensional fracture and deriving the growth laws in three dimensions. We have used recent advances in dynamical critical phenomena to study hysteresis in disordered systems, explaining the return-point-memory effect, predicting distributions for Barkhausen noise, and elucidating the transition from athermal to burst behavior in martensites. From a nonlinear lattice-dynamical model of a first-order transition using simulations, finite-size scaling, and transfer matrix methods, it is shown that heterophase transformation precursors cannot occur in a pure homogeneous system, thus emphasizing the role of disorder in real materials. Full integration of nonlinear Landau-Ginzburg continuum theory with experimental neutron-scattering data and first-principles calculations has been carried out to compute semi-quantitative values of the energy and thickness of twin boundaries in InTl and FePd martensites. |
| 出版年 | 1994 |
| 报告类型 | Technical Report |
| 语种 | 英语 |
| 国家 | 美国 |
| 来源学科分类 | 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY ; 36 MATERIALS SCIENCE ; SOLIDS ; NONLINEAR PROBLEMS ; CRACK PROPAGATION ; PROGRESS REPORT ; MARTENSITE ; PHASE TRANSFORMATIONS ; HYSTERESIS ; ORDER-DISORDER TRANSFORMATIONS ; SPIN GLASS STATE ; SYMMETRY 665000 ; 360103 ; PHYSICS OF CONDENSED MATTER ; MECHANICAL PROPERTIES |
| URL | http://www.osti.gov/scitech/servlets/purl/10169268 |
| 资源类型 | 科技报告 |
| 条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/265735 |
| 推荐引用方式 GB/T 7714 | Sethna, J.P.,Krumhansl, J.A.. Theory of nonlinear, distortive phenomena in solids: Martensitic, crack, and multiscale structures-phenomenology and physics. Progress summary, 1991--1994,1994. |
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