DESIGN OF LOW WEIGHT COMPONENTS: A THEORETICAL APPROACH
| Autor: | O. Wänstrand, Sture Hogmark, Å Kassman-Rudolphi |
|---|---|
| Rok vydání: | 2002 |
| Předmět: |
Materials science
Yield (engineering) Alloy chemistry.chemical_element Surfaces and Interfaces engineering.material Condensed Matter Physics Titanium nitride Surfaces Coatings and Films chemistry.chemical_compound chemistry Coating Aluminium Indentation Materials Chemistry engineering Forensic engineering von Mises yield criterion Composite material Tin |
| Zdroj: | Surface Engineering. 18:93-97 |
| ISSN: | 1743-2944 0267-0844 |
| DOI: | 10.1179/026708401225002776 |
| Popis: | The commercially available software package Elastica has been used to calculate the von Mises stresses in steel as well as in titanium nitride (TiN) and nickel coated aluminium subjected to spherical indentation. Uncoated steel of three different yield strengths was used as reference material, and indenters of different radii were utilised. The critical loads for plastic deformation arrived at were then applied to an Al alloy coated with 5 μ m TiN, and any yield was detected. In cases where the TiN coating could not protect the Al alloy from plastic flow, the required thickness of an intermediate nickel layer was calculated. It was found that with sharp indenters, it is possible to obtain the same critical load for onset of plastic deformation for TiN coated aluminium as for uncoated hardened steels. When the radius of the indenter is large, however, this is not possible owing to the limited thickness of the TiN coating. With the introduction of an intermediate load carrying nickel layer between t... |
| Databáze: | OpenAIRE |
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