Fabrication and Mechanical Properties of Ternary Compound Ti3SiC2: Application of Pulse Discharge Sintering Technique
✍ Scribed by Z.-F. Zhang; Z.-M. Sun; H. Hashimoto
- Publisher
- John Wiley and Sons
- Year
- 2002
- Tongue
- English
- Weight
- 352 KB
- Volume
- 4
- Category
- Article
- ISSN
- 1438-1656
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✦ Synopsis
nium substrate. Such recovery process might lead to stronger orange peel and ridging effects when compared to the uncoated sheets.
These experimental observations of sheet roughening during forming allow us to draw some important conclusions. First, when judging the micromechanical behavior of coatings during subsequent plastic deformation their roughness must be carefully investigated as a function of strain. In other words coated sheets can show larger strain-induced roughness than uncoated sheets of the same material. Second, changes in intrinsic surface topography during plastic straining can in detail be understood in terms of the distribution of the accumulated plastic microstrains, which, in turn depends on the in-plane and through-thickness microstructure. The determination of microstrains gives a clearer picture of surface micromechanics than texture measurements alone. The spatial distribution of Cube-and Goss-oriented crystals can explain the observed accumulated plastic microstrains and banded surface topographies of uncoated aluminium sheets. [2] In particular the presence of grain clusters consisting of the above-mentioned components, i.e. the occurrence of soft and hard clusters, stimulates strong heterogeneity of surface strains and entails ridging. Orange peel can be explained in terms of the individual deformation behavior of the crystals.