Effect of Carbon on DA718 Alloy with P Addition

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J Mater Sci Technol ›› 2003, Vol. 19 ›› Issue (06): 616-618.

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Effect of Carbon on DA718 Alloy with P Addition

Na LI, Shouren GUO, Dezhong LU, Wenru SUN, Yan XU, Zhuangqi HU

Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China

Received:1900-01-01 Revised:1900-01-01 Online:2003-11-28 Published:2009-10-10
Contact: Na LI

Abstract

Abstract: Lower content of carbon can further improve the stress rupture life of p-modified DA 718 alloy up to more than 270%. Meanwhile, the ductility of the alloy decreased a little. More boron atoms dissociate due to decreasing carbon content and interact with phosphorus which brings the longer stress rupture life of the alloy. Less carbon may induce more phosphorus segregating in the grain boundary and result in brittleness.

Key words: DA 718 alloy, Carbon, Phosphorus

Na LI, Shouren GUO, Dezhong LU, Wenru SUN, Yan XU, Zhuangqi HU. Effect of Carbon on DA718 Alloy with P Addition[J]. J Mater Sci Technol, 2003, 19(06): 616-618.

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Effect of Carbon on DA718 Alloy with P Addition

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