|Table of Contents|

Process study to reduce Sr modification latent time of Al-Si alloy(PDF)

《火箭推进》[ISSN:1672-9374/CN:CN 61-1436/V]

Issue:
2013年01期
Page:
58-64
Research Field:
工艺与材料
Publishing date:

Info

Title:
Process study to reduce Sr modification latent time of Al-Si alloy
Author(s):
WANG Lin;  YANG Huan-qing
Xi’an Aerospace Engine Factoty, Xi’an 710100, China
Keywords:
-
PACS:
V434-34
DOI:
-
Abstract:
Besides inconvenience in production, the extension of Sr modification latent time will cause the increase of Sr melting loss, recession of modification effect, increase of oxidation-hydrogen absorption on Al alloy surface, and eventually the pollution of the alloy. The temperature and convection strength of the liquid metal and the geometric dimension and surface state of Al-Sr alloy are important factors that influence Sr modification latent time. Flow field simulation and calculation of Sr diffusion were conducted by establishing physical model and verified by tests. After process optimization Sr modification latent time was reduced from 60 min to 20 min with excellent modification effect of Al-Sr alloy. Al-Si alloy possessed good properties after modification.

References:

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