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Structures at the Intersection of Ε-martensite Variants in 316-type Austenitic Stainless Steel Single Crystal Compressively Deformed at Cryogenic Temperature
| Content Provider | Semantic Scholar |
|---|---|
| Author | Tasaki, Wataru |
| Copyright Year | 2018 |
| Abstract | A single crystal of 316-type austenitic stainless steel was compressively deformed at 173 K with respect to the compressive axis parallel to <001> direction to induce FCC (γ) to HCP (ε) martensitic transformation. The pre-polished side surface in {110} plane was observed by means of scanning electron microscopy and the structures at the intersection of different ε-martensite variants. Their crystallographic characteristics were analyzed with electron backscattering diffraction. Among the four different εmartensite variants with comparable Schimid factors above 0.45, there are two types of combinations of crossing shears, depending on the shear angles either perpendicular to or 30 o-inclined from the intersection axis. The former stimulated the reverse transformation into the γ-crystal rotated from the parent γ-phase by 90 o with respect to the intersection axis, while the latter produced the second martensitic transformation into the α'-martensite. The atomic rearrangement at the two types of the intersection reactions can be visualized by the geometric consideration on the double-shear deformation of the Thompson tetrahedron. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://www.lem3.univ-lorraine.fr/ESOMAT2018/Abstracts/Session4/215.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
