http://localhost:8080/xmlui/handle/123456789/1066 2026-04-26T08:14:36Z http://localhost:8080/xmlui/handle/123456789/2978 Title: Development of Machinable Glass-Ceramic without Nucleating Agents Authors: Venkateswaran, C.; Padala, Amarnath; Sreemoolanadhan, H.; Ajith, M.R.; Mathew, Mariamma; Sharma, S.C. Abstract: Mica containing glass-ceramic is prepared by crystallizing magnesium alumino silicate glass between 600°C and 1100°C without the use of any additives or nucleating agents. Effects of ceramization heat treatment conditions on phase constitution and microstructures are analyzed using XRD and HRSEM respectively. Developed glass-ceramics have been analyzed for its microhardness and machinability. Optimum heat treatment condition for achieving uniformly distributed fluorophlogopite phase essential for machinability, and at the same time, magnesium aluminum silicate phase for increasing the hardness, is presented. Description: NITW 2015-01-01T00:00:00Z http://localhost:8080/xmlui/handle/123456789/2915 Title: Effect of Roll Diameter and Modes of Rolling on Evolution of Texture in High Purity Aluminum Authors: Mondal, C.; Umamaheshwer Rao, A.C.; Tagore, G.R.N.; Singh, A.K. Abstract: Present work describes the development of texture in high purity aluminum under different modes of deformation by rolling using two different roll diameters, namely 300 and 610 mm. It has been observed that the change in both the roll diameter as well as the modes of rolling has a marked influence on the evolution of texture as well as the characteristics of a- and β-fibres. The results are discussed in terms of the effects of roll gap geometry and the relevant stress conditions that affect the strain path of crystallite rotation Description: NITW 2011-12-01T00:00:00Z http://localhost:8080/xmlui/handle/123456789/2910 Title: Mixed Mode (I/III) Fracture Behaviour of an Aerospace Grade Aluminium Alloy in Different Ageing Conditions Authors: Rambabu, P.; Narasayya, Ch.V.A.; Mohan, M.K.; Prasad, N. Eswara Abstract: The effect of ageing on the mixed mode fracture toughness (I/III) was evaluated for the aluminium alloy AA2219 in limited underaged (LUA), underaged (UA) peakaged (PA) and overaged (OA) conditions. Opening mode fracture toughness (Mode I) test was conducted. Sheet tensile samples were prepared and tested in all the ageing conditions. Optical microscopy has been carried out and fractographic studies have been conducted to study and determine the mode of failure. Description: NITW 2015-01-01T00:00:00Z http://localhost:8080/xmlui/handle/123456789/2864 Title: Ti(Pt, Pd, Au) based high temperature shape memory alloys Authors: Yamabe-Mitarai, Y.; Arockiakumar, R.; Wadood, A.; Suresh, K.S.; Kitashima, T.; Hara, T.; Shimojo, M.; Tasaki, W.; Takahashi, M.; Takahashi, S.; Hosoda, H. Abstract: Rising martensitic transformation temperature is required to develop HTSMAs. Then, we have focused on the alloys consisting of Ti and precious metals such as TiPt, TiPd and TiAu due to their high martensitic transformation temperatures. To strengthen these compounds and control phase transformation temperature, third elements were partially substituted to the alloys. Some of the TiPd–base compounds indicated 100% shape recovery at temperature range between 400-450 ºC. The effect of third elements on phase transformation and shape memory effects was investigated. Description: NITW 2015-01-01T00:00:00Z