From Nanoindentation to Microhardness to Tensile Strength: Correlation Coefficients Estimates as a Function of Microstructure in Eutectic SnBi Alloy
ABSTRACT Determining strength to hardness correlation coefficients on nano and microscale in correspondence to microstructure and composition leads the way to inexpensive, non‐destructive ways to predict tensile strength of bulk materials, which is important for developing preventive maintenance pro...
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| Format: | Article |
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Wiley
2025-04-01
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| Series: | Engineering Reports |
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| Online Access: | https://doi.org/10.1002/eng2.70113 |
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| author | Nataliya Starostina Aja Hartman Rosemary Cole Dongmeng Li Jong W. Park |
| author_facet | Nataliya Starostina Aja Hartman Rosemary Cole Dongmeng Li Jong W. Park |
| author_sort | Nataliya Starostina |
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| description | ABSTRACT Determining strength to hardness correlation coefficients on nano and microscale in correspondence to microstructure and composition leads the way to inexpensive, non‐destructive ways to predict tensile strength of bulk materials, which is important for developing preventive maintenance procedures in a variety of industries. Nanohardness and microhardness tests were performed on an in‐house prepared eutectic SnBi alloy. Elemental composition and eutectic morphology were verified by scanning electron microscopy and energy dispersive spectroscopy. The linear correlation coefficient, C1 = HIT/Hv, between nanoindentation hardness and Vickers microhardness was determined based on experimental measurements. A value of C1 > 1.25 was obtained, exceeding the expected value for polycrystalline alloys C1 = 1.25. The Tabor factor, k = Hv/σ at 8% strain, is well known to be about 3 for polycrystalline alloys. However, for the eutectic alloy, the estimated Tabor factor was consistently greater than 3. The stronger correlation in both cases suggests the presence of an unaccounted factor contributing to both C1 and k. Comparison to coefficients estimated from data available for other alloy systems is discussed. |
| format | Article |
| id | doaj-art-e50e3df45da340c7957bf70665dff109 |
| institution | Kabale University |
| issn | 2577-8196 |
| language | English |
| publishDate | 2025-04-01 |
| publisher | Wiley |
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| series | Engineering Reports |
| spelling | doaj-art-e50e3df45da340c7957bf70665dff1092025-08-20T03:48:46ZengWileyEngineering Reports2577-81962025-04-0174n/an/a10.1002/eng2.70113From Nanoindentation to Microhardness to Tensile Strength: Correlation Coefficients Estimates as a Function of Microstructure in Eutectic SnBi AlloyNataliya Starostina0Aja Hartman1Rosemary Cole2Dongmeng Li3Jong W. Park4Mechanical Engineering Department Santa Clara University Santa Clara California USAMechanical Engineering Department Santa Clara University Santa Clara California USAMechanical Engineering Department Santa Clara University Santa Clara California USAMechanical Engineering Department Santa Clara University Santa Clara California USAMechanical Engineering Department Santa Clara University Santa Clara California USAABSTRACT Determining strength to hardness correlation coefficients on nano and microscale in correspondence to microstructure and composition leads the way to inexpensive, non‐destructive ways to predict tensile strength of bulk materials, which is important for developing preventive maintenance procedures in a variety of industries. Nanohardness and microhardness tests were performed on an in‐house prepared eutectic SnBi alloy. Elemental composition and eutectic morphology were verified by scanning electron microscopy and energy dispersive spectroscopy. The linear correlation coefficient, C1 = HIT/Hv, between nanoindentation hardness and Vickers microhardness was determined based on experimental measurements. A value of C1 > 1.25 was obtained, exceeding the expected value for polycrystalline alloys C1 = 1.25. The Tabor factor, k = Hv/σ at 8% strain, is well known to be about 3 for polycrystalline alloys. However, for the eutectic alloy, the estimated Tabor factor was consistently greater than 3. The stronger correlation in both cases suggests the presence of an unaccounted factor contributing to both C1 and k. Comparison to coefficients estimated from data available for other alloy systems is discussed.https://doi.org/10.1002/eng2.70113eutectic microstructurenanoindentation hardness to Vickers hardness coefficientnano‐micro‐hardness to tensile strength correlationSnBi alloyTabor factor |
| spellingShingle | Nataliya Starostina Aja Hartman Rosemary Cole Dongmeng Li Jong W. Park From Nanoindentation to Microhardness to Tensile Strength: Correlation Coefficients Estimates as a Function of Microstructure in Eutectic SnBi Alloy Engineering Reports eutectic microstructure nanoindentation hardness to Vickers hardness coefficient nano‐micro‐hardness to tensile strength correlation SnBi alloy Tabor factor |
| title | From Nanoindentation to Microhardness to Tensile Strength: Correlation Coefficients Estimates as a Function of Microstructure in Eutectic SnBi Alloy |
| title_full | From Nanoindentation to Microhardness to Tensile Strength: Correlation Coefficients Estimates as a Function of Microstructure in Eutectic SnBi Alloy |
| title_fullStr | From Nanoindentation to Microhardness to Tensile Strength: Correlation Coefficients Estimates as a Function of Microstructure in Eutectic SnBi Alloy |
| title_full_unstemmed | From Nanoindentation to Microhardness to Tensile Strength: Correlation Coefficients Estimates as a Function of Microstructure in Eutectic SnBi Alloy |
| title_short | From Nanoindentation to Microhardness to Tensile Strength: Correlation Coefficients Estimates as a Function of Microstructure in Eutectic SnBi Alloy |
| title_sort | from nanoindentation to microhardness to tensile strength correlation coefficients estimates as a function of microstructure in eutectic snbi alloy |
| topic | eutectic microstructure nanoindentation hardness to Vickers hardness coefficient nano‐micro‐hardness to tensile strength correlation SnBi alloy Tabor factor |
| url | https://doi.org/10.1002/eng2.70113 |
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