稀土对铸造锌合金微观组织及力学性能的影响
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摘要
采用镧铈混合稀土对铸造锌合金进行变质处理,研究了不同稀土含量对微观组织及力学性能的影响。结果表明,稀土可以起到细化晶粒作用;稀土含量为0～0.2%时,随着稀土含量的增加,抗拉强度及冲击韧性增加;稀土含量为0.2%时,抗拉强度及冲击韧性最佳;当稀土含量超过0.25%时,其抗拉强度及冲击韧性呈下降趋势。
In this paper,lanthanum cerium mixed rare earth is used to treat cast zinc alloy,the effects of different rare earth contents on microstructure and mechanical properties are studied. The results show that rare earth has the effect of refining grain. When the rare earth content is 0 ～ 0.2%,the tensile strength and impact toughness are increased with the increase of rare earth content. Tensile strength and impact toughness are best when the rare earth content is 0.2%. When the content of rare earth exceeds 0.25%,tensile strength and impact toughness show a downward trend.
In this paper,lanthanum cerium mixed rare earth is used to treat cast zinc alloy,the effects of different rare earth contents on microstructure and mechanical properties are studied. The results show that rare earth has the effect of refining grain. When the rare earth content is 0 ～ 0.2%,the tensile strength and impact toughness are increased with the increase of rare earth content. Tensile strength and impact toughness are best when the rare earth content is 0.2%. When the content of rare earth exceeds 0.25%,tensile strength and impact toughness show a downward trend.
引文
[1]高存贞,杨涤心,谢敬佩,等.高铝锌合金研究现状及进展[J].热加工工艺,2010,39(7):23-26.
[2]郭亚希,谢敬佩,王文焱,等. Ti、B对ZA27合金组织及力学性能的影[J].热加工工艺,2009,38(5):39-40.
[3]张国英,刘春明,魏丹,等.稀土在铸造锌铝合金ZA27变质中的作用机理研究[J].沈阳师范大学学报,2006,24(3):283-284.
[4]刘贵立,李荣德.稀土及杂质元素对ZA27合金晶间腐蚀的影响[J].化学物理学报,2004,17(5):649-651.
[5]李祥,薛涛,刘荣佩,等.RE对ZA43合金组织、力学性能及抗磨性的影响[J].特种铸造及有色合金,2007,27(5):401-403.
[6]刘杰,刘智勇,彭日升,等.高铝锌合金微量元素合金化的组织和性能[J].物理测试,1994,(5):8-9.
[2]郭亚希,谢敬佩,王文焱,等. Ti、B对ZA27合金组织及力学性能的影[J].热加工工艺,2009,38(5):39-40.
[3]张国英,刘春明,魏丹,等.稀土在铸造锌铝合金ZA27变质中的作用机理研究[J].沈阳师范大学学报,2006,24(3):283-284.
[4]刘贵立,李荣德.稀土及杂质元素对ZA27合金晶间腐蚀的影响[J].化学物理学报,2004,17(5):649-651.
[5]李祥,薛涛,刘荣佩,等.RE对ZA43合金组织、力学性能及抗磨性的影响[J].特种铸造及有色合金,2007,27(5):401-403.
[6]刘杰,刘智勇,彭日升,等.高铝锌合金微量元素合金化的组织和性能[J].物理测试,1994,(5):8-9.