2022-Sustainable Industrial Processing Summit
SIPS2022 Volume 11 Poveromo Intl. Symp. Advanced Iron & Steel Making and Production of Ferro-alloys
| Editors: | F. Kongoli, G.Brooks, P. Butterworth, M. Geerdes, Y. Gordon, M. Grant, L. Lu, D. Lu, K. Saito, H. Sohn, T. Usui. |
| Publisher: | Flogen Star OUTREACH |
| Publication Year: | 2022 |
| Pages: | 276 pages |
| ISBN: | 978-1-989820-54-4(CD) |
| ISSN: | 2291-1227 (Metals and Materials Processing in a Clean Environment Series) |
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New variants of T-x diagram with three allotropes of iron
Maria Parfenova1; Vasily Lutsyk1; Vera Vorob'eva1; Anna Barlukova2;1INSTITUTE OF PHYSICAL MATERIALS SCIENCE SB RAS, Ulan-Ude, Russian Federation; 2DORZHI BANZAROV BURYAT STATE UNIVERSITY, Ulan-Ude, Russian Federation;
Type of Paper: Regular
Id Paper: 388
Topic: 2
Abstract:
In [1] there are 4 variants of T-x diagram with 3 allotropes of the component A: 1) the only peritectic transformation; 2) closed loop of 2-phase region with 2 low-temperature allotropes: 3) peritectic and evtectoid, divided by the eutectic; 4) metatectic and peritectoid, divided by the eutectic. Two additional variants are offered here: 5) metatectic and evtectoid, divided by the eutectic (Fig. 1,a); 4) peritectic and peritectoid, divided by the eutectic (Fig. 1,b). They were elaborated by means of flow diagrams (phase reaction scheme) [2].
Figure 1. T-x diagram with metatectic and eutectoid transformation (a), corresponding flow diagram (c), variant with peritectic and peritectoid transformation (b) and flow diagram (d)
In view of the widely spread use of computerized calculations of phase diagrams, there was an attempt to introduce a strict definition of Scheil reaction scheme (flow diagram) for the ternary systems [3]. As it was suggested that it be adopted for the production of computer-plotted flow diagrams, it’s better to start with the T-x diagrams of binary systems (like Fig. 1,c-d).
This work was been performed under the program of fundamental research SB RAS (project 0270-2021-0002).
Keywords:
Iron; Phase Diagrams; Allotropy; Flow diagramReferences:
1. V.Ya. Anosov, S.A. Pogodin. Basic principles of phys.-chem. analysis. Publ. House USSR Ac. of Sci. M.-L. 1947. 876p. P. 469. (In Russian)2. R.G. Connell // J. Phase Equil. 1994. V. 15 P. 6-19.
3. M. Hillert, B. Sundman // CALPHAD. 1990. V. 14. P. 111-114.