期刊
METALS AND MATERIALS INTERNATIONAL
卷 20, 期 4, 页码 757-763出版社
KOREAN INST METALS MATERIALS
DOI: 10.1007/s12540-014-4021-2
关键词
foaming temperature; melting; casting; pore morphology; mechanical properties
资金
- SGP Company
In this study an attempt was carried out to determine the effect of production temperature on the mechanical properties and energy absorption behavior of closed-cell A356 alloy foams under uniaxial compression test. For this purpose, three different A356 alloy closed-cell foams were synthesized at three different casting temperatures, 650 A degrees C, 675 A degrees C and 700 A degrees C by adding the same amounts of granulated calcium as thickening and TiH2 as blowing agent. The samples were characterized by SEM to study the pore morphology at different foaming temperatures. Compression tests of the A356 foams were carried out to assess their mechanical properties and energy absorption behavior. The results indicated that increasing the foaming temperature from 650 A degrees C to 675 A degrees C and 700 A degrees C reduces the relative density of closed cell A356 alloys by 18.3% and 38% respectively and consequently affects the compressive strength and energy absorption of cellular structures by changing them from equiaxed polyhedral closed cells to distorted cells. Also at 700 A degrees C foaming temperature, growth of micro-pores and coalescence with other surrounding pores leads to several big voids.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据