Results 81 to 90 of about 15,535 (214)

Grain refining with DDRX by isothermal MDF of Al-Zn-Mg-Cu alloy

Journal of Materials Research and Technology, 2020
Evolution of grain structure during isothermal multi-direction forging (MDF) of an Al-Zn-Mg-Cu alloy at 400 °C and 450 °C with strain rates from 10−3 s−1 to 10−5 s−1 was investigated with electron backscattering diffraction (EBSD) and transmission ...
Jiuhui Zhao, Yunlai Deng, Jianguo Tang
doaj   +1 more source

Multi-dimensional, multi-national, multi-faceted hydrographic training: the Nippon Foundation GEBCO training program at the University of New Hampshire [PDF]

, 2005
Hydrographic training entered a new era when students arrived at the University of New Hampshire in August of 2004 to form the first class of the Nippon Foundation GEBCO (General Bathymetric Chart of the Oceans) training program.
Angwenyi, Clive, Karlapati, Srinivas, Monahan, Dave, Montoro, Hugo, Morishita, Taisei, Mustapha, Abubakar, Peralta, Walter Reynoso, Sharma, Shereen   +7 more
core   +1 more source

Microstructure Evolution of AZ80 Magnesium Alloy during Multi-Directional Forging Process

MATERIALS TRANSACTIONS, 2014
Grain refinement of a magnesium alloy, AZ80, was studied in multi-directional forging (MDF) with decreasing temperatures from 683 to 573K. The MDF was carried out up to accumulative true strains of around 7 with changing the loading direction from pass to pass.
Qingfeng Zhu, Lei Li, Zhiqiang Zhang, Zhihao Zhao, Yubo Zuo, Jianzhong Cui   +5 more
openaire   +2 more sources

Materials review for improved automotive gas turbine engine [PDF]

The potential role of superalloys, refractory alloys, and ceramics in the hottest sections of engines operating with turbine inlet temperatures as high as 1370 C is examined.
Belleau, C., Ehlers, W. L., Hagen, F. A.
core   +1 more source

Multi-Directional Forging and Warm Extrusion of AZ80Mg Alloys

MATERIALS TRANSACTIONS, 2021
Hiromi Miura, Keiichiro Minami, Masakazu Kobayashi, Chihiro Watanabe   +3 more
openaire   +2 more sources

Effects of multi-directional forging process on coarse crystalline phases and mechanical properties of 2195 Al–Cu–Li alloy

Journal of Materials Research and Technology
The 2195 Al–Cu–Li alloy, extensively used in aerospace applications such as rocket tank transition rings, suffers from coarse crystalline phases formed during casting.
Hailin He, Huiyu Chen, Mianzhi Tang, Youping Yi, Wenxue Zhang, Shiquan Huang, Fei Dong   +6 more
doaj   +1 more source

The Control of Flow Localization in the Post Severe Plastic Deformation (SPD) Forming of Aluminum Through the Application of Low Strain Amplitude Multidirectional (LSA-MDF) Forging [PDF]

Materials Research
Severe Plastic Deformation (SPD) of metals leads to their strengthening and losses in the work hardening capacity. The latter causes flow localization upon subsequent forming of the material.
C.G. de Faria, M.T.P. Aguilar, P.R. Cetlin   +2 more
doaj   +1 more source

Využití numerických simulací při optimalizaci technologických procesů objemového tváření za studena [PDF]

, 2012
The paper deals with numerical and physical modelling aimed at optimisation of production technology and designing of manufacturing tools with use of finite-element method.
Brumar, Tomáš, Kedroň, Jan, Rusz, Stanislav, Salajka, Michal, Tylšar, Stanislav   +4 more
core  

Superplasticity of Fine-Grained Magnesium Alloy AZ31 Processed by Multi-Directional Forging

MATERIALS TRANSACTIONS, 2007
Superplasticity was studied in a fine-grained magnesium alloy AZ31 processed by multidirectional forging (MDF) under decreasing temperature conditions. Tensile tests were carried out at temperatures from 393 K to 473 K and at various strain rates. Superplasticity appears even at a low temperature of 393 K with a stress exponent of around 5.6 and a ...
Jie Xing, Xuyue Yang, Hiromi Miura, Taku Sakai   +3 more
openaire   +2 more sources

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