Temperature dependence of strength

The temperature dependencies of strength and plasticity of as-cast Ti-3Al-XSi (where X=2,4,6- wt.%) alloys vs. Zr content are shown in Fig. 3. Zr additions increase the high temperature strength and decrease the RT plasticity of the alloys. The temperature dependence of plasticity of Ti-3 Al-XSi alloys with Zr exhibits a typical brittle-to-ductile behaviour. 

Do ceramics experience a ductile-to-brittle (or the converse) transition and is it important Ceramics can exhibit both types of behavior over different temperature ranges. Figure 16.8 illustrates the temperature dependence of strength for ceramics. 

O. Unal and N. P. Bansal, Temperature Dependency of Strength of a Unidirectional SiC Fiber-Reinforced (Ba, Sr)Al2Si208 Celsian Composite, in Advances in Ceramic Matrix Composites TV (J. P. Singh and N. P. Bansal, Eds.), Am. Ceram. Soc., Westerville, OH Ceram. Trans., 96, 135-147 (1999). 

Gupta (1983) has also shown that the temperature dependence of strength caused by fatigue can be expressed as ... 

Fig. 8.43. Temperature dependence of strength and ductility of lutetium. Gladkikh (1975) Condition not given and purity variously quoted from 95.7% to 98.7% Lu. The writer is of the opinion that the lower purity is correct because there is a great difference in compressive and tensile ductility parameters.

The process of adhesion at the contact zone of two thick films of amorphous high-molecular-weight polymers with glassy bulk has been investigated by means of a lap-shear joint method. The kinetics and temperature dependence of strength a at both symmetric and asynunetric polymer-polymer interfaces have been found to follow the repetition mechanism of chain diffusion and an Arrhenius-like behavior, respectively. A new method to measure the surface glass transition temperature of thick... 

Relative advantages low price low temperature dependence of strength and modulus (100-200°C) processability ... 

Strength characteristics of carbon materials almost do not depend on temperature—at least at temperatures of A1 reduction, so the temperature dependence of strength for carbon cathode materials more likely has academic interest. It is well known that the static elastic modulus (determined at mechanical testing) is sufficiently lower compared with values obtained via ultrasonic methods. 

Stress and Temperature Dependence of Strength and Ductility (Deformation Maps)... 

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