The effects of alkaline earth elements Sr and Ca on the castabilities, microstructures, mechanical properties and tensile creep resistance of Mg-Al based magnesium alloys are analyzed and discussed.
介绍了碱土元素Ca和Sr对Mg-Al系合金的铸造性能、微观组织、拉伸性能和抗蠕变性能的影响。
The creep resistance of Y-TZP and ZTA is improved greatly by SiC particulate dispersion because grain boundary sliding during creep is impeded effectively and the growth and coalescence of the creep cavity are constrained by SiC particles.
实验结果表明,Y-TZP的蠕变机理为晶界扩散和晶界滑移,SiC颗粒可以有效地抑制晶界滑移过程,大幅度提高Y-TZP的抗蠕变性能;但由于Y-TZP陶瓷的晶界扩散速率大,使Y-TZP/SiC的抗蠕变性能仍较差。
The methods of improving the creep resistance of magnesium alloys and the creep resistance mechanisms of magnesium alloy at elevated temperature are reviewed.
从镁合金高温蠕变机理出发,评述了提高镁合金抗蠕变性能的主要途径和近年来国内外主要抗蠕变镁合金系列(Mg-Al系、Mg-Zn系、Mg-RE系)的研究进展。
Yttrium aluminium garnet fiber has been paid much attention in material sciences for its high performance such as high tensile strength, oxygen-resistance, creep-resistance and low electroconductivity etc, compared to alumina fiber and other inorganic oxide fibers.
与氧化铝等其它无机氧化物纤维相比，铝酸钇纤维不仅具有高强度、抗氧化、抗蠕变性能及低的电导率，在２５～１４００℃范围内，还具有恒定的断裂应力，是一种极具潜力的绝热耐火材料和结构增强材料，近几年在材料科学界引起了强烈关注。