Results 11 to 20 of about 613,523 (264)

Microstructure, Hot Deformation Behavior, and Textural Evolution of Mg-3Sn-2Al-1Zn-0.6Nd Alloy

open access: yesMetals, 2022
To prepare wrought magnesium alloys with excellent plastic deformation properties, Mg-3Sn-2Al-1Zn-0.6Nd alloys were prepared. A hot compression test of Mg-3Sn-2Al-1Zn-0.6Nd alloy was carried out on a thermo-mechanical simulator.
Yuhang Guo   +4 more
doaj   +1 more source

Hot Deformation Behavior of SiCP/A1-Cu Composite

open access: yesCailiao gongcheng, 2017
Using the Gleeble-1500D simulator, the high temperature plastic deformation behavior of SiCp/Al-Cu composite were investigated at 350-500℃ with the strain rate of 0.01-10s-1. The true stress-strain curves were obtained in the tests. Constitutive equation
CHENG Ming-yang   +5 more
doaj   +1 more source

Hot Deformation Behavior of As-Cast 30Cr2Ni4MoV Steel Using Processing Maps

open access: yesMetals, 2017
The hot deformation behavior of as-cast 30Cr2Ni4MoV steel was characterized using processing maps in the temperature range 850 to 1200 °C and strain rate range 0.01 to 10 s−1.
Peng Zhou, Qingxian Ma, Jianbin Luo
doaj   +1 more source

Temperature and Strain Rate Controls of AISI 4340 based on a 3D Processing Map in a Hot Forging Process [PDF]

open access: yes한국정밀공학회지, 2022
This paper investigated the hot deformation behavior of an AISI 4340 material through high-temperature compression experiments. The compression tests were performed to obtain stress-strain curves at processing temperatures of 900, 1,000, 1,100, and 1 ...
Joon Hee Park   +3 more
doaj   +1 more source

Query processing of spatial objects: Complexity versus Redundancy [PDF]

open access: yes, 1993
The management of complex spatial objects in applications, such as geography and cartography, imposes stringent new requirements on spatial database systems, in particular on efficient query processing. As shown before, the performance of spatial query
Kriegel, Hans-Peter   +3 more
core   +1 more source

Effect of Calcium on the Hot Working Behavior of AZ31-1.5 vol.% Nano-Alumina Composite Prepared by Disintegrated Melt Deposition (DMD) Processing

open access: yesMetals, 2018
AZ31-based nanocomposites are produced by disintegrated melt deposition (DMD) processing. In this investigation, the influence of the addition of Ca to AZ31-1.5 vol.% nano-alumina composite (base) on its hot working behavior is studied to develop a ...
Kamineni Pitcheswara Rao   +4 more
doaj   +1 more source

A storage and access architecture for efficient query processing in spatial database systems [PDF]

open access: yes, 1993
Due to the high complexity of objects and queries and also due to extremely large data volumes, geographic database systems impose stringent requirements on their storage and access architecture with respect to efficient query processing.
Kriegel, Hans-Peter   +8 more
core   +1 more source

Determining Thermal Parameter Windows of 40Cr10Si2Mo Steel from an Enhanced Processing Map [PDF]

open access: yesMaterials Research
The properties of a hot-deformed component can be enhanced by planning its forming process within the desired thermal processing-parameter windows associated with dynamic recrystallization (DRX).
Guo-zheng Quan   +4 more
doaj   +1 more source

Formal derivation of distributed MapReduce [PDF]

open access: yes, 2014
MapReduce is a powerful distributed data processing model that is currently adopted in a wide range of domains to efficiently handle large volumes of data, i.e., cope with the big data surge.
Salehi Fathabadi, Asieh   +9 more
core   +1 more source

Hot Deformation Behavior and Microstructure Evolution of a TiBw/Near α-Ti Composite with Fine Matrix Microstructure

open access: yesMetals, 2019
The hot deformation behavior and microstructure evolution of a 7.5 vol.% TiBw/near α-Ti composite with fine matrix microstructure were investigated under the deformation conditions in a temperature range of 800−950 °C and strain rate ...
Changjiang Zhang   +7 more
doaj   +1 more source

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