The Effect Of Temperature On The Impact Behavior Of Tib2 Reinforced Xdtm Tial Intermetallic Matrix Composites
Download The Effect Of Temperature On The Impact Behavior Of Tib2 Reinforced Xdtm Tial Intermetallic Matrix Composites PDF/ePub or read online books in Mobi eBooks. Click Download or Read Online button to get The Effect Of Temperature On The Impact Behavior Of Tib2 Reinforced Xdtm Tial Intermetallic Matrix Composites book now. This website allows unlimited access to, at the time of writing, more than 1.5 million titles, including hundreds of thousands of titles in various foreign languages.
The Effect of Temperature on the Impact Behavior of TiB2 Reinforced XDTM-TiAl Intermetallic Matrix Composites
A study was performed to determine the effect of temperature on the impact behavior of two XD(TM) processed TiB2 reinforced TiAl intermetallic composites (IMC's). An existing instrumented tup drop tower apparatus was modified for the program. The IMC compositions were Ti-49 at % Al + 5 vol. % TiB2 and Ti-48 at % Al + 10 vol. % TiB2. The specimens were notched to an a/w ratio of 0.2. Details and test procedures for the modified apparatus were presented. Test temperatures ranged from -192 deg C to 1100 deg C. Impact toughness and maximum bending stress for both IMC's decreased from room temperature to temperatures as high as 1100 deg C. An important experimental observation which supports these results is the change from transgranular cleavage to intergranular fracture at the 760 deg C test temperature. Also noted is the possible contribution to decreasing toughness of unfavorable difference in coefficient of thermal expansion between TiB2 and the matrix with increasing temperature. Data repeatability and verification of the ability to observe high temperature brittle-to ductile transition behavior established confidence in the modification of the existing instrumented tup apparatus.
Mechanisms and Mechanics of Composites Fracture
Contains 26 papers presented at the International Conference on [title], held to address the latest ideas concerning the mechanisms and mechanics of composite fractures. The main focus was on the "driving forces" behind the various damage events in the inorganic composites at both micro and macro levels. The papers are grouped in five sections: deformation and damage in particulate composites; crack initiation and propagation; micromechanical modeling; fracture and fatigue; and microstructural tailoring, impact, and creep. No index. Annotation copyright by Book News, Inc., Portland, OR