Poisoning Effect of Trace Elements on the Modification Behavior of Strontium in Al-Si Alloy

Chen Chengcheng; Qin Zebin; Shang Huiliang; Ma Shixuan; Zhang Wenda; Bai Peikang

doi:10.15980/j.tzzz.2018.12.008

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Poisoning Effect of Trace Elements on the Modification Behavior of Strontium in Al-Si Alloy
Vol. 38, Issue 12, Pages: 1307-1311(2018)
Published： 2018 ，
DOI： 10.15980/j.tzzz.2018.12.008

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[1]陈诚诚,秦泽斌,尚辉良,马世旋,张文达,白培康.微量元素对铸造Al-Si合金中Sr变质行为的毒化效应[J].特种铸造及有色合金,2018,38(12):1307-1311.

Chen Chengcheng, Qin Zebin, Shang Huiliang, et al. Poisoning Effect of Trace Elements on the Modification Behavior of Strontium in Al-Si Alloy. [J]. Special Casting & Nonferrous Alloys 38(12):1307-1311(2018)
[1]陈诚诚,秦泽斌,尚辉良,马世旋,张文达,白培康.微量元素对铸造Al-Si合金中Sr变质行为的毒化效应[J].特种铸造及有色合金,2018,38(12):1307-1311. DOI： 10.15980/j.tzzz.2018.12.008.

Chen Chengcheng, Qin Zebin, Shang Huiliang, et al. Poisoning Effect of Trace Elements on the Modification Behavior of Strontium in Al-Si Alloy. [J]. Special Casting & Nonferrous Alloys 38(12):1307-1311(2018) DOI： 10.15980/j.tzzz.2018.12.008.

摘要

铸造Al-Si合金在生产、使用、回收及再生过程中往往添加、积累了一定量合金化元素和杂质元素。某些微量元素（Ca、B、Bi、Sb、RE等）往往会和Sr反应形成复杂金属间化合物

减少了参与变质的Sr的含量

降低了Sr的变质效果。Sr在加入到不同合金中

首先要中和微量元素对Sr变质共晶Si的毒化效应

即只要熔体中Sr的含量足够高

仍能够产生良好的变质效果。

Abstract

A certain amount of alloying elements and impurity elements are often added or accumulated in the process of production

use

recovery and regeneration of cast Al-Si alloy.Some trace elements（Ca

etc.）often react with Sr to form complex intermetallic compounds

reducing the content of Sr and decreasing the modification effect of Sr.When strontium is added to different alloys

it is necessary to neutralize the poisoning effect of trace elements on the Sr modification behavior.As long as the content of strontium is high enough

it can still produce well modification effect.