Effect of microstructure inhomogeneity on mechanical properties of different zones in TA15 electron beam welded joints
| Autor: | Chengze Zhang, Chang Liu, Caiyan Deng, Yong Liu, Baoming Gong, Ce Liu |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
010302 applied physics
Heat-affected zone Materials science Metals and Alloys Micromechanics 02 engineering and technology Welding Plasticity 021001 nanoscience & nanotechnology Geotechnical Engineering and Engineering Geology Condensed Matter Physics Microstructure 01 natural sciences law.invention law Indentation 0103 physical sciences Materials Chemistry Composite material Deformation (engineering) 0210 nano-technology Tensile testing |
| Zdroj: | Transactions of Nonferrous Metals Society of China. 30:678-687 |
| ISSN: | 1003-6326 |
| Popis: | The effects of microstructure inhomogeneity on the mechanical properties of different zones in TA15 electron beam welded joints were investigated using a micromechanics-based finite element method. Considering the indentation size effect, the mechanical properties for constituent phases of the base metal (BM) and heat affected zone (HAZ) were determined by the instrumented nano-indentation test. The macroscopic mechanical properties of BM and HAZ obtained from the tensile test agree well with the numerical results. The incompatible deformation between the constituent phases tends to localize along the softer primary phase α where failure usually initiates in form of localized plastic strain. Compared with the BM, the mechanical properties of constituent phases in the HAZ differ substantially, leading to more serious strain localization behavior. |
| Databáze: | OpenAIRE |
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