Dawu Xiao Yinglei Li Shisheng Hu Lingcang Cai
材料科学技术（英文）
High temperature mechanical behaviors of zirconium at high strain rate of 103 s-1 were studied by split Hopkinson pressure bar (SHPB). The influences of strain rate and temperature on the micro-structural evolution, as well as the occurrence of shear localization and subsequent fracture, were also investigated. It's found that the compressive stress-strain response depends sensitively on the applied strain rate and test temperature. Micro-structural observations revealed that the density of the twinning grains reduced as the temperature increased, and increased in response to increasing strain rate. Optical observation of the fracture surfaces showed evidence of adiabatic shear localization along the fracture planes prior to crack formation. Finally, a special form of the Zerilli-Armstrong model was used to describe the mechanical response of zirconium.
关键词:
Zirconium
,
高温
,
应变率
,
绝热剪切带
杨长辉
,
曹集舒
,
傅博
材料导报
采用水玻璃为碱组分制备碱熟料矿渣水泥石,研究600℃和1000℃下,其宏观外观性能变化;并结合扫描电镜(SEM)、X射线衍射(XRD)以及傅里叶变换红外光谱(FTIR)分析了其微观结构.结果表明:600℃与1000℃高温作用对碱熟料矿渣水泥石外观无影响;600℃高温时,碱熟料矿渣水泥石内部开始出现微小裂缝,部分C-S-H凝胶脱水转变成β-C2S,开始生成少量钙黄长石,当温度升至1000℃时,大部分C-SH凝胶已分解,生成较多β-C2S、钙黄长石、钙铝黄长石以及钙铝石.
关键词:
碱矿渣水泥
,
高温
,
C-S-H
,
β-C2S
,
钙黄长石
,
钙铝黄长石
,
钙铝石
王国利
,
范卿
,
刘金强
,
赵晓康
,
王明月
黄金
doi:10.11792/hj20140912
磁力泵是采用推拉磁路结构，通过隔离套的隔离作用，实现动力扭矩传输的新型泵类。以莱州精炼厂为工程背景，介绍了磁力泵的结构、性能特点，以及在莱州精炼厂的应用过程和效果。对于高温、强腐蚀性液体介质的输送，磁力泵是一种不错的选择。
关键词:
磁力泵
,
无接触传递
,
无泄漏
,
高温
,
强腐蚀
,
介质
,
精炼厂
