Results 91 to 100 of about 15,484 (216)

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

Effect of pre-induced twinning on microstructure and tensile ductility in GW92K magnesium alloy during multi-direction forging at decreasing temperature

Journal of Magnesium and Alloys, 2014
Effect of pre-induced twinning on the microstructure evolution and mechanical properties of extruded Mg-9.26Gd-2.08Y-0.36Zr (GW92K) alloy have been investigated during multi-direction forging with large strains at decreasing temperature from 400 °C to ...
S.Q. Li, W.N. Tang, R.S. Chen, W. Ke
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

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

Numerical Investigation on the Strain Evolution of Ti-6Al-4V Alloy during Multi-directional Forging at Elevated Temperatures

High Temperature Materials and Processes, 2018
Multi-directional forging (MDF) is one of the most promising severe plastic deformation (SPD) methods used in fabricating large-scale bulk metal materials with ultra-fine grains (UFG). A finite element model for MDF is developed to investigate the strain
Yan Chenkan, Shen Jun, Lin Peng
doaj   +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

Synergistic enhancement of strength and toughness of β-Ti alloy with a fine grain: Effect of deformation temperature [PDF]

MATEC Web of Conferences
It is difficult for as-cast titanium alloys to achieve high strength and toughness due to the presence of coarse β grains. In this study, multi-directional forging (MDF) was employed to break down the coarse β grains into fine grains and the mechanism of
Li Yili, Fang Hongze, Sun Shichen, Yu Jichang, Chen Ruirun   +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

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

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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