phase transformations and resulting microstructures in ti-47al-2cr alloy
نویسندگان
چکیده
0
منابع مشابه
دگرگونی‌‌های فازی و ریزساختارهای ناشی از آنها در آلیاژ Ti-47Al-2Cr
در این مقاله تغییر حالت‌های فازی در یک آلیاژ بین فلزی بر پایه ?-TiAl حاوی کروم مورد مطالعه قرار گرفته است. عملیات حرارتی نمونه‌های این آلیاژ در بالای دمای T? و تبرید بعدی آنها با سرعت‌های مختلف، منتج به طیفی از ریزساختارها شد که با مطالعه و شناسایی آنها به کمک روش‌های میکروسکوپی و تفرق اشعه ایکس، نمودار شماتیک CCT این آلیاژ ترسیم گردید. سپس نمونه‌ای از این آلیاژ با ریزساختارگاما توده‌ای (massi...
متن کاملLow Temperature Phase Transformations in Copper-Quenched Ti-44.5Al-8Nb-2.5V Alloy
In this study, an easily controlled transformation similar to the β + α → β + α + γ and the analysis of metastable phases in a β solidifying Ti-44.5Al-8Nb-2.5V alloy were investigated. Therefore, a liquid alloy copper-quenching followed by annealing at an application temperature (850 °C) has been carried out. Following quenching, a microstructure composed of several supersaturated phases-the ba...
متن کاملEffect of phase transformations on laser forming of Ti–6Al–4V alloy
In laser forming, phase transformations in the heat-affected zone take place under steep thermal cycles, and have a significant effect on the flow behavior of Ti–6Al–4V alloy and the laser-forming process. The flow-stress data of a material are generally provided as only dependent on strain, strain rate, and temperature, while phase transformations are determined by both temperature and tempera...
متن کاملEFFECTS OF PHASE TRANSFORMATIONS ON LASER FORMING OF Ti-6Al-4V ALLOY
In laser forming, phase transformations in the heated affected zone (HAZ) take place under steep thermal cycles, and have a significant effect on the flow behavior of Ti-6Al-4V alloy and the laser forming process. In the present work, the transformation during heating is modeled based on the Johnson-Mehl-Avrami (JMA) theory, and the decomposition of phase, producing martensite ' or lamellae dep...
متن کاملPhase equilibria and phase transformations in the Ti-rich corner of the Fe–Ni–Ti system
While the main features of the Fe–Ni–Ti system are well known at low Ti content, literature review of the Ti-rich corner revealed inconsistencies between experimental reports. This investigation presents new experimental results, defined to remove the uncertainties concerning melting behavior and solid-state phase equilibria of the (Ni,Fe)Ti2 phase with the adjacent (Fe,Ni)Ti (B2, CsCl-type str...
متن کاملKinetic Pathways of Phase Transformations in Two-Phase Ti Alloys
Possible phase transformation kinetic pathways from the high temperature b phase to the low temperature (a+ b) two-phase Ti alloys were analyzed using the graphical thermodynamic method and the assumption that diffusionless and displacive transformations take place much faster than phase separation which requires long-range diffusion. It is shown that depending on the composition of a b-stabili...
متن کاملمنابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
نشریه دانشکده فنیجلد ۴۱، شماره ۱۱، صفحات ۰-۰
میزبانی شده توسط پلتفرم ابری doprax.com
copyright © 2015-2023