Download or read book Dynamic Strength and Strain Rate Effects on Fracture Behavior of Tungsten and Tungsten Alloys written by and published by . This book was released on 1991 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt: An investigation of the stress-strain response as a function of strain rate, spall strength, and dynamic fracture behavior of pure W, W-26Re, W-Ni-Fe and W-Ni-Fe-Co has been performed. Spall strength measurements, obtained in symmetric-impact tests, showed an increase in spall strength from 0.4 GPa for pure tungsten to 3.8 GPa for 90W- 7Ni-3Fe. Concurrent with increase in spall strength was a change in fracture mode from cleavage (for pure W) to a mixture of transgranular and intergranular fracture for the alloyed systems. Compression testing performed at strain rates from 10−3 s−1 to 3000 s−1 showed that pure tungsten exhibits a large strain rate sensitivity and almost no work hardening at tested strain rates. In contrast, W-26Re and W-Ni-Fe-Co displayed significant work hardening at all strain rates. 12 refs., 5 figs. 2 tabs.

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 464 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Effect of Strain Rate on Mechanical Properties of Wrought Sintered Tungsten at Temperatures Aboue 2500 Degrees F written by Paul F. Sikora and published by . This book was released on 1961 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Microstructure Fracture Characteristics and Tensile Properties of Two Tungsten Heavy Alloys written by and published by . This book was released on 1995 with total page 39 pages. Available in PDF, EPUB and Kindle. Book excerpt: The influence of microstructure on fracture behavior and tensile properties was investigated for two tungsten heavy alloys (93W-4.9Ni-2.1Fe and 91W-6Ni-3Co by weight-percentage) that are suitable materiai candidates for use as kinetic energy penetrators. Both alloys were evaluated in swaged and aged conditions. For comparable levels of swaging and aging, the W-Ni-Co alloy exhibited increased tensile strength and ductility compared to the W-Ni-Fe material. The W-Ni-Co alloy had a smaller average W grain size and a larger percentage of W in the matrix. Fracture surfaces of failed uniaxial tensile specimens tested at quasi-static and low-to-medium strain rates were characterized using scanning electron microscopy. The results indicate a strong relationship between microstructure, fracture behavior, and tensile properties as a function of alloy composition and strain rate. (MM).

Download or read book High Strain Rate Effects in Tungsten Quasi single Crystals written by Robert William Crafts and published by . This book was released on 1992 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Discontinuously Reinforced Titanium Matrix Composites written by Lujun Huang and published by Springer. This book was released on 2017-04-21 with total page 181 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book introduces readers to titanium matrix composites (TMCs) with novel network microstructures. The bottleneck problem of extreme brittleness and low strengthening effect surrounding TMCs fabricated by means of powder metallurgy has recently been solved by designing network microstructures, which yield both high strength and superior ductility. As such, network structured TMCs will increasingly offer materials characterized by low weight, high strength, high temperature resistance and superior deformability. The book systematically addresses the design, fabrication, microstructure, properties, modification, and toughening mechanisms of these composites, which will help us find innovative solutions to a range of current and future engineering problems.

Download or read book High Strain Rate Behavior of Refractory Metals and Alloys written by Minerals, Metals and Materials Society. Fall Meeting and published by Minerals, Metals, & Materials Society. This book was released on 1992 with total page 338 pages. Available in PDF, EPUB and Kindle. Book excerpt: This aims to be the most complete volume available on the developing technology of refractory metals and alloys for high strain rate applications. Processing, testing and evaluation procedures for this group of specialized materials are thoroughly examined. Added emphasis is placed on high strain rate processing, dynamic compaction and forging, microstructure, texture, composition and loading rate effects on deformation and fracture.

Download or read book Yielding and Fracture in Tungsten and Tungsten rhenium Alloys written by Peter L. Raffo and published by . This book was released on 1968 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Energy Research Abstracts written by and published by . This book was released on 1991-10 with total page 582 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Fracture mechanics fifteenth symposium written by Melvin F. Kanninen and published by ASTM International. This book was released on with total page 676 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Investigation of the Properties of Tungsten and Its Alloys written by Union Carbide Metals Company. Metals Research Laboratories and published by . This book was released on 1960 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Research in Progress written by and published by . This book was released on 1991 with total page 274 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book 3rd International Conference on Mechanical and Physical Behaviour of Materials Under Dynamic Loading written by and published by . This book was released on 1991 with total page 988 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Physical Metallurgy of Tungsten and Tungsten Alloys written by Westinghouse Electric Corporation. Westinghouse Lamp Division and published by . This book was released on 1962 with total page 458 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Dynamic Strain Aging During the Creep and Tensile Testing of a Molybdenum titanium carbon Alloy written by Peter L. Raffo and published by . This book was released on 1969 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: A study was made of the influence of dynamic strain aging on the creep and short time tensile properties of a Mo-0.82 Ti-0.20 C (at. %) alloy. The strengthening effects are directly related to carbide precipitation during deformation. The precipitation lowers the density of mobile dislocations and slows down Ihe rate of recovery.

Download or read book Laser induced Stress Wave Technique for Thin Film Adhesion and High Strain Rate Materials Research written by Lili Hu and published by . This book was released on 2007 with total page 356 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Metals Abstracts written by and published by . This book was released on 1997 with total page 782 pages. Available in PDF, EPUB and Kindle. Book excerpt: