Results 71 to 80 of about 999,147 (302)

Markedly enhancing mechanical properties of powder metallurgy superalloy by hot oscillatory forging

Journal of Materials Research and Technology
A powder metallurgy superalloy prepared by hot pressing (HP) was forged under static and oscillatory pressures. The microstructure, mechanical properties and fracture behavior of the sample before and after forging were characterized in detail.
Dejian Sun, Linfei Guo, Guanhua Wu, Yaqian Tong, Yang Gao, Songqin Xia, Lei Fan, Xiaoqin Guo, Linan An   +8 more
doaj   +1 more source

Influence of hot isostatic pressing and forging on the microstructure and mechanical properties of Cu-3Ag-1Zr alloys

Materials & Design, 2019
Cu-3 wt% Ag-1 wt% Zr alloys were well prepared by gas atomization followed by hot isostatic pressing (HIP) and forging. The effects of HIP temperature on the microstructure and mechanical properties of the as-HIPed and as-forged alloys were investigated,
Xiang Wu, Richu Wang, Chaoqun Peng, Yan Feng, Zhiyong Cai   +4 more
doaj   +1 more source

‘When joy comes your way, you have to grab it!’ Troubling how queer joy features in the lives of LGBT+ school‐attending youth in South Africa

British Educational Research Journal, EarlyView.
Abstract Recently, the concept ‘queer joy’ has gained interest in LGBT+ scholarship in the West. I use this scholarship as an entry point to explore how school‐attending LGBT+ youth express joy and how joy serves as a form of resistance against gender and sexuality norms in educational settings.
Dennis Francis
wiley   +1 more source

Определение параметров, влияющих на технологическую точность горячей объемной штамповки деталей авиационных конструкций из титановых сплавов типа ВТ-20 [PDF]

, 2011
Определены технологические ограничения на конструкцию заготовок, получаемых методом горячей объемной штамповки в открытых штампах, и параметры, влияющие на технологическую точность горячей штамповки и качество готовой продукции.
Маковецкий, А. В.
core  

The mechanical behaviour of an ultrafine grained Ti-47Al-2Cr (at%) alloy in tension and compression and at different temperatures [PDF]

, 2011
A bulk ultrafine grained (UFG) Ti-47Al-2Cr (at%) alloy has been produced using a powder metallurgy process that combines high energy mechanical milling (HEMM) of a mixture of Ti, Al and Cr powders to produce a Ti/Al/Cr composite powder and hot isostatic ...
Cao, Peng, Chiu, Y.L., Gabbitas, Brian, Nadakuduru, Vijay Navaratna, Zhang, Deliang   +4 more
core   +2 more sources

(Re)humanizing Blackness: Integrating BlackCrit in the Mental Health Counseling of Black Clients

The Journal of Humanistic Counseling, EarlyView.
ABSTRACT Does Black mental health matter? Historically, mental illness in the Black community has been inadequately addressed. Yet Black Americans experience more severe psychological distress than other races, and they are also more likely to experience poor outcomes in counseling.
Demetrius Cofield
wiley   +1 more source

The effect of processing route on properties of HfNbTaTiZr high entropy alloy [PDF]

, 2019
High entropy alloys (HEA) have been one of the most attractive groups of materials for researchers in the last several years. Since HEAs are potential candidates for many (e.g., refractory, cryogenic, medical) applications, their properties are studied ...
Kim, Hyoung-Seop, Lukáč, František, Macháčková, Adéla, Melikhova, Oksana, Málek, Jaroslav, Vilémová, Monika, Vlasák, Tomáš, Zýka, Jiří, Čížek, Jakub   +8 more
core   +1 more source

Effect of Variations in the Ring Thickness on the Dynamic Performance of the Bimetal Gears

International Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT This study used a six‐degrees‐of‐freedom dynamic model to analyze the dynamic response of bimetal spur gears. Aluminum alloy forms the core of the bimetal gears, and a uniform‐thickness steel ring surrounds the teeth. Gear mesh stiffness of bimetal gears and the transmission error have been assessed using a numerical approach based on finite ...
Bikramjit Singh, Pawan Kumar, S. P. Harsha   +2 more
wiley   +1 more source

Thermo-micro-mechanical simulation of bulk metal forming processes

, 2019
The newly proposed microstructural constitutive model for polycrystal viscoplasticity in cold and warm regimes (Motaman and Prahl, 2019), is implemented as a microstructural solver via user-defined material subroutine in a finite element (FE) software ...
Haase, Christian, Motaman, S. Amir H., Prahl, Ulrich, Schacht, Konstantin   +3 more
core   +1 more source

Durability of Forging Tools Used in the Hot Closed Die Forging Process—A Review

Materials
The article presents the classification of the wear mechanisms of forging tools. The durability of dies can be enhanced through a variety of methods, including the selection of appropriate hot working tool steel, the application of effective heat ...
Grzegorz Ficak, A. Łukaszek-Sołek, M. Hawryluk   +2 more
semanticscholar   +1 more source