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An optimal proportion of austenitic and martensitic phases is achieved in isometric-phase steels through meticulously designed and elaborately calculated surface nanotechnology. Such isometric-phase steels with nanolamellaed structures and nanograins, exhibit surpassing combinations of strength, hardness and ductility (with yield strength of 1215 MPa, surface hardness of 8.6 GPa, and favorable ductility...
By using topologically controlled surface mechanical attrition treatment (SMAT), we processed annealed copper (Cu) and obtained an improved strength without sacrifice of ductility. The partially SMAT process demonstrated its ability to introduce a planar heterogeneous structure in the Cu, while the hardness measurements and microstructure characterization showed that the “hard phase” SMATed areas...
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