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挤压AM50(-Ca)镁合金的显微组织与力学性能研究
Alternative TitleMicrostructure and mechanical properties of As-extruded AM50(-Ca)
张久文; 陈荣石; 周文龙; 韩恩厚
2007
Source Publication材料科学与工艺
ISSN1005-0299
Volume15.0Issue:1.0Pages:141-144
Abstract研究了挤压AM50(-Ca)镁合金的微观组织和力学性能.研究发现添加钙在AM50合金中生成新的Al2Ca相,并细化合金的晶粒尺寸.大于2wt.%的钙使铸态AMS0的晶粒尺寸从200 μm减小到40 μm,使挤压态AM50的晶粒尺寸从15 μm减小到7.5 μm.含钙量较少时,晶粒内仍含有少量的Mg17Al12相,Al2Ca相主要分布在晶界;含钙量多于2wt.%时,合金中的Mg17Al12完全消失,除晶界处的Al2Ca相外,在晶粒内部出现大量的针状Al2Ca相.加钙提高了AM50合金的低温抗拉强度,同时在所有试验温度下合金的屈服强度得到提升.
Other AbstractThe effects of Ca addition on the microstructure and mechanical properties of the extruded AM50 magnesium alloy have been studied. The results show that the Ca addition can reduce the quantity of Mg17Al12phase and form a new A12Ca phase distributing along grain boundaries. When Ca is added with an amount of more than 2wt. %, needle -shaped Al2Ca precipitates are observed inside grain interiors, and the grain sizes of both as -cast and as - extruded AM50 alloy are decreased from 200μm and 15μm to 40μm and 7. 5μm, respectively. It is found that the yield strength of the extruded AM50 alloy are improved with increasing Ca content in the studied temperature range, while the improvement in ultimate strength can be observed only at low temperature.
KeywordM50 Ca 变形镁合金 显微组织 拉伸性能
Indexed ByCSCD
Language中文
CSCD IDCSCD:2809270
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/147130
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
张久文,陈荣石,周文龙,等. 挤压AM50(-Ca)镁合金的显微组织与力学性能研究[J]. 材料科学与工艺,2007,15.0(1.0):141-144.
APA 张久文,陈荣石,周文龙,&韩恩厚.(2007).挤压AM50(-Ca)镁合金的显微组织与力学性能研究.材料科学与工艺,15.0(1.0),141-144.
MLA 张久文,et al."挤压AM50(-Ca)镁合金的显微组织与力学性能研究".材料科学与工艺 15.0.1.0(2007):141-144.
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