粉末冶金梯级烧结法制备多孔Al-30Zn合金及其阻尼性能

周高峰; 江鸿杰; 刘崇宇; 黄宏锋; 韦莉莉; 王一博

doi:10.15980/j.tzzz.2019.12.029

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粉末冶金梯级烧结法制备多孔Al-30Zn合金及其阻尼性能
Damping Properties of Porous Al-30Zn Alloy by Powder Metallurgy Step Sintering Process
2019年39卷第12期页码：1384-1387
纸质出版日期： 2019 ，
DOI： 10.15980/j.tzzz.2019.12.029

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[1]周高峰,江鸿杰,刘崇宇,黄宏锋,韦莉莉,王一博.粉末冶金梯级烧结法制备多孔Al-30Zn合金及其阻尼性能[J].特种铸造及有色合金,2019,39(12):1384-1387.

Zhou Gaofeng, Jiang Hongjie, Liu Chongyu, et al. Damping Properties of Porous Al-30Zn Alloy by Powder Metallurgy Step Sintering Process[J]. Special Casting & Nonferrous Alloys, 2019,39(12):1384-1387.
[1]周高峰,江鸿杰,刘崇宇,黄宏锋,韦莉莉,王一博.粉末冶金梯级烧结法制备多孔Al-30Zn合金及其阻尼性能[J].特种铸造及有色合金,2019,39(12):1384-1387. DOI： 10.15980/j.tzzz.2019.12.029.

Zhou Gaofeng, Jiang Hongjie, Liu Chongyu, et al. Damping Properties of Porous Al-30Zn Alloy by Powder Metallurgy Step Sintering Process[J]. Special Casting & Nonferrous Alloys, 2019,39(12):1384-1387. DOI： 10.15980/j.tzzz.2019.12.029.

摘要

采用粉末冶金梯级烧结法结合NH

HCO

造孔剂成功制备出具有高等效内耗值的多孔Al-30Zn合金

并对其微观结构、相组成、硬度、阻尼性能及储能模量进行研究。结果表明

通过添加NH

HCO

造孔剂能有效地控制多孔Al-30Zn合金的孔隙率

形成较大的闭孔结构孔隙

且无新相生成;随着造孔剂添加量增加

多孔Al-30Zn合金的硬度逐渐降低;在300～350℃时

添加8%造孔剂的Al-30Zn合金等效内耗值明显高于未加造孔剂的Al-30Zn合金

其中在300℃时

添加8%造孔剂的Al-30Zn合金等效内耗值高达0.082

较未加造孔剂的Al-30Zn合金提高了54.7%;多孔Al-30Zn合金试样的储能模量随着温度的升高和造孔剂添加量的增大而下降。

Abstract

Porous Al-30 Zn alloy with high equivalent internal consumption value was prepared successfully by powder metallurgy step sintering method combined with NH

HCO

pore-making agent

and its microstructure

phase composition

hardness

damping performance and energy storage modulus were analyzed. The results reveal that the porosity of porous Al-Zn alloy can be effectively controlled by adding NH

HCO

pore-forming agent

and a large closed pore structure can be formed without new phase formation. The hardness of porous Al-30 Zn alloy is decreased gradually with the increase of pore forming agent content. At 300 ℃ to 350 ℃

equivalent internal friction values of Al-30 Zn alloy with the 8% pore-forming agent addition are significantly higher than that of ones without pore-forming agent

and at 300 ℃

the equivalent internal friction of Al-30 Zn alloy with 8% pore-forming agent reaches up to 0.082

which is 54.7% higher than that of Al-30 Zn alloy without pore-forming agent. The energy storage modulus of porous Al-30 Zn alloy is decreased with the increase of temperature and the addition of pore-forming agent.