As the most widely applied material in the world, steel has been well studied for over hundred years. Many processing methods have been applied to improve its structure and properties. To control the properties of steels, the cold work such such as rolling and drawing was performed together with other treatments. However, the grain size of such treated steels is generally at the range of micrometers. It is expected that further improvement of steels can be achieved by obtaining nanostructure by heavy cold work, e.g. ball milling of powders.
The present study is devoted to the obtaining nanocrystalline structure in ball milled powders of various steels. For carbon steels the formation of nanoferrite and dissolution of carbides was observed. The obtained nanoferrite was characterized by grain size, strain and lattice parameter calculations. In the case of austenitic stainless steel subjected to ball milling, strain-induced transformation leading to the martensite formation was observed. The thermal stability of the obtained nanostructures was also studied.

• Legal notice:
  

  Copyright (c) Pielaszek Research, all rights reserved.
  The above materials, including auxiliary resources, are subject to Publisher's copyright and the Author(s) intellectual rights. Without limiting Author(s) rights under respective Copyright Transfer Agreement, no part of the above documents may be reproduced without the express written permission of Pielaszek Research, the Publisher. Express permission from the Author(s) is required to use the above materials for academic purposes, such as lectures or scientific presentations.
  In every case, proper references including Author(s) name(s) and URL of this webpage: https://science24.com/paper/658 must be provided.

1. Amorphous Ni₅₉Zr₂₀Ti₁₆M₅ (M = Cu, Ag) alloys obtained by melt spinning and mechanical alloying
2. Influence of Fe and Ag addition on the amorphization and thermal stability of CuTiZrNi powders processed by mechanical alloying
3. Structural transformations and magnetic properties of Fe₆₀Pt_25-xB_15+x alloys
4. Phase transformations in ball milled AISI 316L stainless steel powder and in the steel after sintering
5. Phase transformations in M2 steel powders subjected to ball milling
6. Microstructure of Ni-P thin layers obtained by a chemical method