Effect of La and La+Sr on Structure and Properties of ZL101A

Abstract:

After heat treatment, the structures and properties of ZL101A alloy with different La and La+Sr contents were studied. The results show that a significant modifying effect can be achieved in ZL101A in metal mould casting. The Si phase in the alloy becomes finer and the average alloy grain size is reduced from 3 mm to 1 mm with La addition 0.6%, which is mainly attributed to the enrichment of La at the eutectic front. The tensile strength and elongation increased with the increasing of La addition. However, excessive amount of La will have negative effects on the tensile strength and elongation. Mixed 0.2% La and 0.015% Sr results in further refined average grain down to 0.5mm, exhibiting improved strength and elongation properties.

• Periodical: Advanced Materials Research (Volumes 97-101)
• Pages: 429-436
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.97-101.429
• Online since: March 2010
• Authors: Guo Fa Mi, Ying Wang, Tao Wen
• Keywords: Modification, Property Analysis, Structure, ZL101A Alloy

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