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Zn对铸态Mg—Mn合金力学性能和腐蚀性能的影响
Alternative TitleEffect of Zn on mechanical properties and corrosion properties of as-cast Mg-Mn alloy
尹冬松; 张二林; 曾松岩
2008
Source Publication中国有色金属学报
ISSN1004-0609
Volume18.0Issue:003Pages:388-393
Abstract研究Zn对Mg-Mn合金微观组织、力学性能和在Hank’s溶液中腐蚀性能的影响。结果表明:Zn可以明显细化Mg—Mn合金的铸态组织,当合金中Zn含量(质量分数)为3%时,合金的晶粒尺寸由700-900μm减小到50-80μm。合金的力学性能也随Zn含量的增加而显著提高;Zn含量为3%时,拉伸强度提高128.8MPa,屈服强度提高42.6MPa,伸长率提高1倍多。在Mg-Mn合金中加入1%-2%的Zn,能够增强Mg-Mn合金钝化膜的稳定性,使Mg-Mn合金腐蚀速度显著降低。但是,当Zn含量增至3%时,钝化膜变得不稳定,腐蚀速度增加,耐蚀性能降低。
Other AbstractThe effect of Zn on the microstructure, mechanical properties and corrosion properties in Hank's solute on of as-cast Mg-Mn alloy was studied. The results indicate that the addition of Zn element can significantly refine the grain size of cast Mg-Mn alloy. When Zn content is increased up to 3% (mass fraction), the grain size of the cast alloy decreases from 700-900 gm to 50-80 Ixm. Meanwhile, the mechanical properties of the alloy also increase with increasing Zn content. When Zn content is 3%, the ultimate tensile strength and the yield strength are increased by 128.8 and 42.6 MPa, respectively, while the elongation is increased twice. Addition of Zn element to Mg-Mn alloy can stabilize the passivation film, which mainly contributes to the low corrosion rate of Mn-Mn-Zn alloy. However, when the Zn content is over 3%, the passivation film becomes unstable, which results in a relatively high corrosion rate.
Keyword镁合金 微观组织 力学性能 腐蚀
Indexed ByCSCD
Language中文
CSCD IDCSCD:3257994
Citation statistics
Cited Times:12[CSCD]   [CSCD Record]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/142310
Collection中国科学院金属研究所
Affiliation中国科学院金属研究所
Recommended Citation
GB/T 7714
尹冬松,张二林,曾松岩. Zn对铸态Mg—Mn合金力学性能和腐蚀性能的影响[J]. 中国有色金属学报,2008,18.0(003):388-393.
APA 尹冬松,张二林,&曾松岩.(2008).Zn对铸态Mg—Mn合金力学性能和腐蚀性能的影响.中国有色金属学报,18.0(003),388-393.
MLA 尹冬松,et al."Zn对铸态Mg—Mn合金力学性能和腐蚀性能的影响".中国有色金属学报 18.0.003(2008):388-393.
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