Spiekane wyroby na bazie proszku żelaza z planowanym gradientem mikrostruktury = Iron powder-based sintered products with controlled gradient microstructure / Krzysztof Zarębski // W: Jakość i innowacyjność ... więcej

Spiekane wyroby na bazie proszku żelaza z planowanym gradientem mikrostruktury = Iron powder-based sintered products with controlled gradient microstructure / Krzysztof Zarębski // W: Jakość i innowacyjność w procesach odlewniczych, obróbce cieplnej i plastycznej oraz w wytwarzaniu materiałów kompozytowych : praca zbiorowa / pod red. Łukasza Miki ; Politechnika Krakowska im. Tadeusza Kościuszki. – Kraków : Wydaw. PK, 2015. – (Monografia / Politechnika Krakowska im. Tadeusza Kościuszki. Mechanika). – S. 169-186 : rys., tab. – Bibliogr. 10 poz., Abstr. – Seria gł.: Monografia / Politechnika Krakowska im. Tadeusza Kościuszki, ISSN 0860-097X ; 494

Studies were carried out on PNC-60 iron powder-based products with controlled gradient microstructure, manufactured by conventional techniques of powder metallurgy involving moulding of "dry" powder and ... więcej

Studies were carried out on PNC-60 iron powder-based products with controlled gradient microstructure, manufactured by conventional techniques of powder metallurgy involving moulding of "dry" powder and pressureless sintering of compacts. The applied method of die filling enabled the formation of controlled gradient zone without the need for pre-pressing the successive layers of product made from different powder compositions. Cylindrical products were manufactured, characterized by microstructure varying in the radial direction and depending on the composition of iron-carbon powder used for this purpose. The main aim of the studies was to investigate the possibility of controlling the width of the transition zone and microstructure gradient between the soft core and hard outer surface of products. The gradient microstructure was examined and described in products which were manufactured using different process parameters which influenced the width of the gradient layer. A mathematical description was presented to simulate the behaviour of resultant products when operating under the conditions of external loads and thermal stresses.