在高温蠕变过程中,开动非基面位错。
During the creep test, some basal dislocation changed non-basal dislocation.
用透射电镜观察了第二阶段蠕变过程位错亚结构的变化。
The dislocation substructure during secondary stage of creep has been examined by TEM.
本文以试验为依据揭示饱水冻结黄土拉伸蠕变过程的若干特点。
Some deformation characteristics of tensile creep revealed by a test of frozen saturated loess are presented in this paper.
试验结果表明,破裂砂岩失稳蠕变过程与煤岩一般的蠕变规律相似;
The results show that creep law of fractured sandstone is similar to those of the general creep characteristics of coal and rock.
用此方法对试验数据进行加工就可得到在蠕变过程中的试验损伤曲线。
Experimental damage curves during creep are obtained as a result of test data processing by the suggested method.
研究结果表明:软土蠕变过程是结构逐渐破损,结构趋向稳定的过程;
The results show that the creep process is the gradual structural damage and structure trends to be stable.
蠕变过程中粘塑性变形占主导,因而其三轴蠕变曲线没有出现渐进流动阶段。
Because of the dominance of viscoplastic deformation in the creep process, creep curves under triaxial compression behave without the third phase of atypical creep curve, viz.
加入锰后,合金在压蠕变过程中的负蠕变量及出现负蠕变的温度和应力范围增大。
The negative creep deformations during compressive creep and the range of temperature and stress at which negative creep occurred increased after adding some Mn to ZA27 alloy.
红砂岩在加速蠕变过程中具有高度的非线性,蠕变应变率随时间呈现跳跃增长特性。
The accelerative creep shows highly nonlinear characteristics; and the creep strain rate displays a discontinuous form, which occurs in jumps change.
加入稀土后,合金在压蠕变过程中的负蠕变量及出现负蠕变的温度和应力范围增大。
The negative creep deformations increased after adding some rare earths to ZA27 alloy, and the ranges of temperature and stress at which the negative creep occurred extended.
蠕变过程中出现的主要结构变化为纤维重排、富碳界面层的氧化以及基质中晶体的生长。
The main structure changes in the creep process were fiber rearrangement, the oxidation of the C-rich interfacial layer and crystal growth within the matrix.
利用自制的破碎岩体多相耦合蠕变试验装置,研究饱和破碎泥岩蠕变过程中孔隙的变化规律。
The variation law of saturated broken mudstone porosity during creep process is studied by using the self-developed multiphase coupling creep test device.
同时,对板岩蠕变过程中蠕变率的变化情况也进行相关的拟合,显示出板岩蠕变率逐步减小到稳态蠕变的过程,取得较好成果。
The creep rate of the slates are also fitted. The results show that the creep rate decreases gradually until it reaches the steady rate.
当外加应力突然降低后,在瞬时蠕变过程中发生了弹性应变和滞弹性应变,整个降载过程中的应变变化值与应力变化值成线性关系。
During the transient creep after stress decrease, it has been found that the total strain transient consists of two components, elastic strain and anelastic strain.
实例计算表明:该模型对沉降预测精度高,能较合理地反应出土颗粒骨架的蠕变过程,且能给出不同时刻的次压缩量,在实际工程上具有一定的参考价值。
It is proved that the new model holds higher prediction accuracy and can reasonably reflect the creep course of soil framework. Hence, it has referential value to practical engineering.
实例计算表明:该模型对沉降预测精度高,能较合理地反应出土颗粒骨架的蠕变过程,且能给出不同时刻的次压缩量,在实际工程上具有一定的参考价值。
It is proved that the new model holds higher prediction accuracy and can reasonably reflect the creep course of soil framework. Hence, it has referential value to practical engineering.
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