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| EFFECTS OF MELTING TREATMENTS ON THE MECHANICAL PROPERTIES OF REVERTED DZ40M ALLOY |
| YANG Jinxia, ZHENG Qi, SANG Zhiru, LANG Haixia, SUN Xiaofeng, HU Zhuangqi |
| Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016 |
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Cite this article:
YANG Jinxia ZHENG Qi SANG Zhiru LANG Haixia SUN Xiaofeng HU Zhuangqi. EFFECTS OF MELTING TREATMENTS ON THE MECHANICAL PROPERTIES OF REVERTED DZ40M ALLOY. Acta Metall Sin, 2010, 46(12): 1511-1516.
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Abstract Reverted DZ40M alloy was refined by melting treatment (MT) which tensile, stress–rupture and creep properties were measured. MT can reduce the content of N from 0.0078% to 0.0024%, as well as the content of S from 0.0015% to 0.0007%. It makes impurity elements such as N, O and S being removed, and the shrinkage area being decreased. MT improves the tensile strength and ductility of reverted DZ40M alloy, especially elongations at room temperature and 1000 ℃ are increased about twice as high as those by regular melting (RM). In addition MT prolongs the stress–rupture lives, and improves the creep properties of reverted DZ40M alloy. Therefore stress–rupture and creep properties of reverted DZ40M alloys are upgraded greatly.
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Received: 25 March 2010
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| Fund: Supported by National Basic Research Program of China (Nos.2010CB631200 and 2010CB631206) |
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