Results 91 to 100 of about 15,459 (217)

Grain size and texture changes of magnesium alloy AZ31 during multi-directional forging

Transactions of Nonferrous Metals Society of China, 2008
Grain size and texture changes of magnesium alloy AZ31 were studied in multidirectional forging (MDF) under decreasing temperature conditions. MDF was carried out up to large cumulative strains of 4.8 with changing the loading direction during decrease in temperature from pass to pass.
Xu-yue YANG, Zheng-yan SUN, Jie XING, Hiromi MIURA, Taku SAKAI   +4 more
openaire   +1 more source

Strengthening mechanism based on dislocation-twin interaction under room temperature multi-directional forging of AZ80 Mg alloy

Journal of Materials Research and Technology
Twin and dislocation have critical influence on the mechanical properties of the widely used AZ80 magnesium alloy. In the present work, we designed room temperature multi-direction forging (MDF) at different strain amplitudes (3% and 6%) with a same ...
Zhuo Wang, Xi Zhao, Shuchang Li, Jianmin Yu   +3 more
doaj   +1 more source

Grain Growth Model of Ultra-Fine Grain AZ80 Magnesium Alloy Multi-Directionally Forged During the Isothermal Heating Process

Medžiagotyra, 2019
This paper takes the ultra-fine grain AZ80 magnesium alloy multi-directionally forged as the research object. We observe its heating behavior at 673 K with an optical microscope, analyze the grain size distribution, and the change of average grain size ...
Jinlong ZHANG, Hui XIE, Ying MA, Shiping TAO, Kun ZHAO, Weigang WU   +5 more
doaj   +1 more source

Cost analysis of advanced turbine blade manufacturing processes [PDF]

A rigorous analysis was conducted to estimate relative manufacturing costs for high technology gas turbine blades prepared by three candidate materials process systems.
Barth, C. F., Blake, D. E., Stelson, T. S.   +2 more
core   +1 more source

Microstructure, Texture and Mechanical Properties of Magnesium Alloys Processed by Multi-Directional Forging: A Review

Applied Sciences
Magnesium (Mg) and its alloys are currently the lightest structural metals in engineering applications, widely used in aerospace, defense technology, transportation and electronic 3C fields.
Jiaxuan Zhu, Huidong Zhi, Zhaoming Yan
doaj   +1 more source

The Effect of Isothermal Multi-Directional Forging on the Grain Structure, Superplasticity, and Mechanical Properties of the Conventional Al–Mg-Based Alloy

Metals, 2019
The current study observed a grain structure evolution in the central part and periphery of the sample of an Al–Mg–Mn-based alloy during isothermal multidirectional forging (IMF) at 350 °C with a cumulative strain of 2.1–6.3 and a ...
Anastasia V. Mikhaylovskaya, Anton D. Kotov, Mikhail S. Kishchik, Alexey S. Prosviryakov, Vladimir K. Portnoy   +4 more
doaj   +1 more source

Multi-scale interactions governing dynamic recrystallization: Coupled fragmentation of coarse T/η phases, DIP-induced MgZn2, and Al3(Sc,Zr) dispersoids in a high-alloy Al–Zn–Mg–Cu–Zr–Sc alloy

Journal of Materials Research and Technology
Understanding how multi-scale second phases interact during thermomechanical processing is essential for controlling dynamic recrystallization (DRX) in highly alloyed 7xxx aluminum systems.
Junhua Cheng, Hongbang Shao, Jinchuan Wen, Yu Liu, Yuhui Wang, Yuanchun Huang   +5 more
doaj   +1 more source

Microstructure and mechanical properties of AZ61 Mg alloy prepared by multi directional forging

Transactions of Nonferrous Metals Society of China, 2010
Abstract AZ61Mg alloy was multi directionally forged (MDFed) during decreasing temperature condition from 643 K to 483 K at a true strain rate of 3×10−3 s−1 up to cumulative strain of ΣΔe=4.0 at maximum. A pass strain of Δe=0.8 was employed. While average grain size decreased gradually with increasing cumulative strain, the evolution of fine-grained ...
H. MIURA, G. YU, X. YANG, T. SAKAI
openaire   +1 more source

DRAFT Report:Community Systems Strengthening Toward a Research Agenda [PDF]

, 2014
Communities have a long history of acting to preserve and promote the health of their members. Public health researchers, programmers, and funders are increasingly recognizing that community involvement is essential to improving health, especially among ...
Arreola, Sonya, Ayala, George, Chong, Susan, Greenall, Matthew, Mallouris, Christoforos   +4 more
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Activismo ciudadano y acontecimientos políticos en la transformación de la esfera pública digital en españa: del sms ¡pásalo! a Podemos [PDF]

, 2019
This paper discusses digital communication, activism and political system in Spain from a critical-historical perspective. The results of combined empirical and analytical research indicate that a critical digital public sphere emerged in 2004 ...
Farné, Alessandra, Nos-Aldás, Eloísa, Sampedro, Víctor   +2 more
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