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AI含量对热镀锌铝合金镀层组织结构影响分析
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作者 张洪顺 王远志 +2 位作者 翟永利 文国强 渠波 《中文科技期刊数据库(引文版)工程技术》 2024年第9期0109-0112,共4页
为提高镀层产品的质量性能,促使锌资源利用效率最大化,在生产制造热镀锌铝合金镀层的过程中,要深入分析AI含量对镀层产品组织结构的影响,为产品的批量化生产,提供可靠的理论支持。本文简要分析了热镀锌层的作用和影响后,基于热镀锌铝合... 为提高镀层产品的质量性能,促使锌资源利用效率最大化,在生产制造热镀锌铝合金镀层的过程中,要深入分析AI含量对镀层产品组织结构的影响,为产品的批量化生产,提供可靠的理论支持。本文简要分析了热镀锌层的作用和影响后,基于热镀锌铝合金镀层的组织结构特点,采用实验论证的方式,重点阐述了AI含量对镀层产品表面组织、截面组织、固相成分以及镀层性能的影响,旨在强化镀层产品的整体性能,实现批量化生产的目标。相关理论成果以期为从业人员提供参考和借鉴。 展开更多
关键词 ai含量 热镀锌铝合金镀层 组织结构影响
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Magnetic properties and large magnetocaloric effects in amorphous Gd-Al-Fe alloys for magnetic refrigeration 被引量:8
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作者 ZHENG ZhiGang ZHONG XiChun +3 位作者 SU KunPeng YU HongYa LIU ZhongWu ZENG DeCheng 《Science China(Physics,Mechanics & Astronomy)》 SCIE EI CAS 2011年第7期1267-1270,共4页
A series of the amorphous Gd75-55A125-5Fe0-40 alloy ribbons were prepared by melt spinning. The structure, magnetic properties and magnetocaloric effect (MCE) of these alloys were investigated. The prepared samples ... A series of the amorphous Gd75-55A125-5Fe0-40 alloy ribbons were prepared by melt spinning. The structure, magnetic properties and magnetocaloric effect (MCE) of these alloys were investigated. The prepared samples have shown the characteristics of a second-order phase transition with zero hysteresis loss and the Tc can be tuned by changing the Fe contents. For the different compositions, the magnetic entropy change (-△Sm) for a field change of 0-5 T reached a maximum value of 7.14 J kg 1 K1 in the Gd70A120Fel0 alloy near its Curie temperature (To) of 149 K. The non-linear composition dependence of (- △ Sin) could be caused by the competitions between Fe-Fe, Fe-Gd and Gd-Gd interactions. The refrigeration capacity (RC) values of these al- loys are about 532-780 J/kg under a magnetic field change of 0-5 T. The results indicate that amorphous GdFeA1 alloys can be considered as ideal candidates for a magnetic refrigerant in the temperature range of 104-222 K. 展开更多
关键词 Gd-Fe-ai amorphous ribbon magnetocaloric effect
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Correlation between supercooled liquid region and crystallization behavior with alloy composition of La-Al-Cu metallic glasses
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作者 ZHANG QingChao PANG ShuJie +1 位作者 LI Yi ZHANG Tao 《Science China(Physics,Mechanics & Astronomy)》 SCIE EI CAS 2011年第9期1608-1611,共4页
Bulk metallic glasses (BMGs) with large supercooled liquid region are promising materials for superplastic forming. In this paper, we demonstrate a microstructure-based strategy to pinpoint the composition with the la... Bulk metallic glasses (BMGs) with large supercooled liquid region are promising materials for superplastic forming. In this paper, we demonstrate a microstructure-based strategy to pinpoint the composition with the largest supercooled liquid region in La 86 x Al 14 Cu x (x=16 at%-20 at%) metallic glass system. By monitoring the changes in crystallization behavior of the glassy alloys with composition to search for the alloys exhibiting eutectic crystallization, the glassy alloys with the largest supercooled liquid region in the given alloy system can be found. The metallic glasses with Cu contents of 16 at%-19 at% exhibited two crystallization peaks, and the primary crystallization product was identified to be α-La by means of DSC, XRD and TEM. The increase in Cu content resulted in the decay of the primary crystallization peak and the increase in onset temperature of crystallization, leading to the enlargement of supercooled liquid region. By further suppressing the α-La primary crystallization with increasing Cu content up to 20 at%, the eutectic crystallization of α-La and LaCu 13 through one crystallization reaction occurred upon heating, where the largest supercooled liquid region of 65 K for La 66 Al 14 Cu 20 glassy alloy was located. This study indicats that, in a given glassy alloy system, a larger supercooled liquid region can be achieved by optimizing the alloy compositions to suppress the primary crystallization. 展开更多
关键词 bulk metallic glass supercooled liquid region CRYSTALLIZATION
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