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Effect of Twin/Tilt on the Growth of Graphite

Published online by Cambridge University Press:  21 February 2011

Zhu Peiyue ,
Sha Rozeng  and
Li Yanxiang
Zhu Peiyue
Affiliation:
Harbin Institute of Technology, Harbin, China
Sha Rozeng
Affiliation:
Harbin Institute of Technology, Harbin, China
Li Yanxiang
Affiliation:
Harbin Institute of Technology, Harbin, China
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Abstract

The effect of twin/tilt initiated in the process of graphite growth making the graphite curling and change from flake to vermicular and spheroidal is discussed. With the developing of the solidification process,the modifying elements enrich in the front of solid-liquid interface, the amount of twin defects in the graphite increases,its tilt fashion changes and the graphite formed varies from flake to vermicular and spheroidal. The modifying elements promote the formation of twin/tilt. When the modifying elements are insufficient for spheroidizing,the tilt orientation of twins is changeable,and the graphite formed is twisted. When the modifying elements are sufficient enough, the tilt orientation of twins becomes singular, and the graphite formed tends to be round. According to the energy and kinetics consideration of the formation of twin/tilt boundary, it is predicted that the twin plane would firstly adopt (10Tm), especially the (10T2) plane. This result coincides well with the experimental observations. It is proposed that the formation of SG can be divided into two steps: growth of graphite nucleus into spherulite by twin/tilt mechanism and brancing on it in a spiral mode.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 34: Symposium – Physical Metallurgy of Cast Iron , 1984 , 3
Copyright
Copyright © Materials Research Society 1985

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References

REFERENCES

1. Lux, B., AFS CMRJ 8, 49–65 (1972)Google Scholar
2. Minkoff, I., 41st Int. Foundry Congress Paper (Belgium 1974 ).Google Scholar
3. Minkoff, I. and Lux, B., The Metallurgy of Cast Iron(Georgi pubishing Co, Switzerland 1975) pp. 473–493.Google Scholar
4. Double, D.D and Hellawell, A., The Metallurgy of Cast Iron(Georgi pubishing Co, Switzerland 1975), pp. 509–528 Google Scholar
5. Sadocha, J.P. and Gruzleski, J.F., The Metallurgy of Cast Iron(Georgi pubishing Co, Switzerland 1975), pp. 443–459 Google Scholar
6. Minkoff, I., The Metallurgy of Cast Iron(Georgi pubishing Co, Switzerland 1975), p. 493.Google Scholar
7. Bollmann, W. and Lux, B., The Metallurgy of Cast Iron(Georgi pubishing Co, Switzerland 1975), pp. 461–471 Google Scholar
8. Xijun, Den,Peiyue, Zhu and Qifu, Liu, In this issue.Google Scholar
9. Liu, P.C., Loper, C.R. et al, AFS Trans. 88, 97–118 (1980).Google Scholar
10. Liu, P.C., Loper, C.R. et al, AFS Trans. 89, 65–78 (1981)Google Scholar
11. Loper, C.R. et al, AFS Trans. 89, 529–542 (1981).Google Scholar
12. Hueisong, Huang, Vermicular Graphite Cast Iron (Qing Hum Univ. Press 1982 ).Google Scholar
13, Liu, P.C. et al, Qiutie (Chinese J. of Ductile Iron), No2, 10–14(1983).Google Scholar
14, Yida, Xie et al, J.of Middle China Inst. of Techn No 2, pp. 126–137 (1980).Google Scholar
15. Munitz, A. and Minkoff, I., 45th Int. Foundry Congress Paper (Hungary 1978).Google Scholar
16. Xishen, Chen et al, Chiness J. of Mechan. Engineering, 16, No4, 47–65 (1980)Google Scholar
17. Swain, R.H. Mc and Bates, C.E., The Metallurgy of Cast Iron (Georgi Publishing Co., Switzerland 1975 ) pp. 423–442 Google Scholar
18. Lux, B., Minkoff, I. et al, The Metallurgy of Cast Iron (Georgi Publishing Co., Switzerland 1975 ), pp. 495–508 Google Scholar
19. Kellermann, C.R. and Loper, C.R., AFS Trans. 72, 417–425(1964).Google Scholar
20. Peiyue, Zhu et al, Qiutie (Chinese J.of Nodular Iron ), No2, 13–17 (1982).Google Scholar
21. Bunin, K.P. et al. Structure of Cast Iron (in Russian 1972)Google Scholar
22. Karsay, S.I., Ductile Iron I, Production (QIT 1976).Google Scholar
23. Chang, Bakk et al, Spheroidal Graphite Cast Iron-Foundation, Theory and Production (in Japanese 1983 ).Google Scholar
24. Xishen, Chen, Chinese J. of Mechan. Engineering 15, No2 122–153 (1979).Google Scholar
25. Lesoult, G., The Metallargy of Cast Iron (Georgi Publishing Co. 1975 ) pp. 457.Google Scholar
26. Peiyue, Zhu, Xishen, Chen et al, Qiutie (Chinese J.of Ductile Iron) , No 4, 1–16 (1978 ).Google Scholar
27. Chunli, Li and Dehai, Wu, Science Report of Qinghua Univ., QH 81011 (no. 83 ), (1981).Google Scholar