Thin Wall Austempered Ductile Iron (TWADI)
Journal Title: Archiwum Odlewnictwa - Year 2009, Vol 9, Issue 3
Abstract
In this paper the analysis of thin walled castings made of ductile iron is considered. It is shown that thin wall austempered ductile iron can be obtained by means of short-term heat treatment of thin wall castings without addition of alloying elements. Metallographic examinations of 2 mm thin walled castings along with casting with thicker wall thickness (20x28 mm) after different austempring conditions are presented. It has been proved that short-term heat treatment amounted 20 minutes of austenitizing at 880 oC followed by holding at 400 oC for 5 minutes causes ausferrite matrix in 2 mm wall thickness castings, while casting with thicker wall thickness remain untransformed and martensite is still present in a matrix. Finally there are shown that thin wall ductile iron is an excellent base material for austempering heat treatments. As a result high mechanical properties received in thin wall plates made of austempered ductile iron.
Authors and Affiliations
E. Fraś, M. Górny
Keywords
Related Articles
- EP ID EP71992
- DOI -
- Views 97
- Downloads 0
Silumins alloy crystallization
This paper presents the results of research, by ATD method, of hypo-, near- and hyperutectic silumins crystallization containing the following alloying additives: Mg, Ni, Cu, Cr, Mo, W, V. It has been shown that, dependi...
Three-dimensional numerical model of solidification with motion of the liquid phase
The paper presents numerical modeling of solidification process with convective motion of the liquid phase, generated both in the liquid and mushy zones. The transition region between the areas filled with liquid and sol...
Influence of cooling rate on the structure and mechanical properties of G17CrMoV5 – 10 cast steel
The paper presents results of research on the influence of cooling rate on the structure and properties of G17CrMoV5 – 10 (L17HMF) cast steel. The material for research was a section taken out from an outer cylinder of a...
Analysis of the applicability of domain ontology in copper alloys processing
Efficient use of corporate resources in the form of intellectual capital is due in large measure to effectiveness of knowledge codification and distribution systems. Making intellectual resources available to employees i...
Application of time-series analysis in foundry production
Characterization of the time-series analysis is presented, as a data mining tool which facilitates better understanding nature of manufacturing process and permits forecasting of future values of the process parameters o...