晶体塑性理论在定向结晶材料与构件上的应用  

The Application of Crystallographic Theory on the Directionally Solidified Materials and Structures

作　　者：岳珠峰[1] 吕震宙[1] 

机构地区：[1]西北工业大学

出　　处：《中国机械工程》1999年第1期64-66,共3页China Mechanical Engineering

基　　金：国家自然科学基金;航空科学基础研究基金

摘　　要：将晶体塑性理论应用于定向结晶材料与构件分析之中。首先结合试验结果，由单晶体的材料基本常数推得横观各向同性的５个材料参数，进一步研究了晶粒数对这５个参数的影响，并给出其分布规律；其次以一真实叶片为例，给出其在考核工况下的蠕变响应，与试车结果比较，得到晶体塑性理论分析定向结晶结构的合理性。The crystallographic theory was applied to the directionally solidified materials and structures. Firstly, combined with the experimental data, the five elastic parameters are deduced from the material parameters of single crystal. The effect of number of crystals on the five parameters has been discussed and their distributions have also been given out. Then, taking a real blade as an example, the creep behavior of directionally solidified turbine blades has been analyzed. From the comparison with the experiments, one can see the agreement of application of crystallographic theory on the directionally solidified materials and structures.

关 键 词：晶体塑性理论 定向结晶材料 横观各向同性 

分 类 号：O733[理学—晶体学] TG113.12[金属学及工艺—物理冶金]