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| AN INVESTIGATION OF DARK FACET FRACTURE IN CAST STEEL 30MnNiMoCu |
| Mao Xiaoyu (Nei Monggol Institute of Materials Research; Baotou) Ou Yuguang Li Zhi Xu Quanxin Li Yuhai (Nei Monggol № 1 Machine Works) (Manuscript received 26 May; 1980; revised; manuscript 5 August; 1981) |
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Cite this article:
Mao Xiaoyu (Nei Monggol Institute of Materials Research; Baotou) Ou Yuguang Li Zhi Xu Quanxin Li Yuhai (Nei Monggol № 1 Machine Works) (Manuscript received 26 May; 1980; revised; manuscript 5 August; 1981). AN INVESTIGATION OF DARK FACET FRACTURE IN CAST STEEL 30MnNiMoCu. Acta Metall Sin, 1982, 18(4): 418-522.
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Abstract A SEM investigation has been made of the occurrence of the dark facet fracture in Al deoxidized cast steel 30MnNiMoCu using dispersive spectrometers of X-ray wave and energy. It was found that the AIN precipitation in the interdendritic areas along the original as-casted columnar grain boundaries contributes mainly to this kind of fracture. The solution and precipitation behaviour of AIN as well as the dependence of AIN on the amounts of Al and Ti added have also been discussed quantitatively.
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Received: 18 April 1982
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1 Woodfine, B.C.; Quarrel, A.G., J. Iron Steel Inst., 195(1960) , 409．
2 Wight, I.A.; Quarrel, A.G., ibid., 200(1962) , 299．
3 Naumann, F.K., Prakt. Metallogr., 10(1973) , 704．
4 Ericson, L., Scand. J. Metall., 6(1977) , 116．
5 山中和夫;寺崎富久长;大谷泰夫;小田光雄;吉原正裕,铁鋼,65(1979) ,1410． |
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