附件二论文书写式样.doc

附件二：论文书写式样 1. “摘要”参考式样（中文摘要约400字左右，外文摘要约250个实词左右） 半固态ZA12合金流变性能研究 摘 要 本文用自行研制的高温同轴双筒流变仪，研究了半固态ZA12合金的流变性能。 对半固态ZA12合金的剪切应力与时间关系曲线和滞回环进行了测试和分析。结果表明半固态ZA12合金具有触变性，其触变性的大小与固相分数和剪切速率有关。在稳态和瞬态的不同条件下，半固态ZA12浆液表现出不同的流体特征。在稳态条件下，半固态ZA12合金的表观黏度随剪切速率的增加而下降，呈现出假塑性的流变特性；而在瞬态条件下，其表观黏度随剪切速率的增加而增大，呈现出胀流性的流变特性。 最后，根据瞬态条件下的试验结果以及流变学理论，建立了能适应实际工况条件的ZA12合金的动态流变模型。 关键词：半固态，ZA12合金，触变性能，流变性能，表观黏度，流变模型 A STUDY ON THE RHEOLOGICAL BEHAVIOR OF SEMI-SOLID ZA12 ALLOY Abstract In this thesis, the rheological behavior of semi-solid ZA12 alloy was investigated using a specially designed high temperature Couette rheometer. The evolution of shear stress with time and the hysteresis loops of semi-solid ZA12 alloy were measured and analyzed. The results show that semi-solid ZA12 alloy possesses the thixotropic property, which varies with solid fraction and shear rate. In addition, the semi-solid ZA12 alloy slurry exhibits different rheological behaviors under steady state and transient state conditions. In case of steady state, the apparent viscosity of semi-solid ZA12 alloy decreases with the increase of shear rate, showing the pseudo-plastic rheological behavior. However, under the transient state condition, it presents the dilatant rheological behavior, i.e. the apparent viscosity increases as shear rate increases. Finally, based on the transient state experimental results and rheology theory, a dynamic rheological model of semi-solid ZA12 alloy was developed, which could be applicable to practical semi-solid processes. KEY WORDS: semi-solid, ZA12 alloy, thixotropic behavior, rheological behavior, apparent viscosity, rheological model 3. “目录”参考式样 目 录 摘要 ……………………………………………………………………………………Ⅰ Abstract …………………………………………………………………………… Ⅱ 绪论 ………………………………………………………………………1 1.1 引言 …………………………………………………………………1 1.2 半固态合金流变性能研究现状 ……………………………………………2 1.3 测试流变性能的常用方法 …………………………………………………5 1.3.1 用同轴双筒式粘度计测试流变性能 ……………………………5 1.3.2 薄片法测试流变性能 ……………………………………………6 1.4 本文的研究目的和主要研究内容 ………………………………………8 试验设备及试验方法 …………………………