Results 61 to 70 of about 61,552 (299)

The Microstructures and Tensile Properties of As-Extruded Mg–4Sm–xZn–0.5Zr (x = 0, 1, 2, 3, 4 wt %) Alloys

Metals, 2017
The microstructures and tensile properties of as-cast and as-extruded Mg–4Sm–xZn–0.5Zr (x = 0, 1, 2, 3, 4 wt %) alloys were systematically investigated by optical microscope, X-ray diffractometer (XRD), scanning electron microscope (SEM) and transmission
Chaojie Che, Zhongyi Cai, Liren Cheng, Fanxing Meng, Zhen Yang   +4 more
doaj   +1 more source

Optimal design for heavy forging robot grippers

, 2010
This paper analyzes three typical mechanisms of heavy forging robot grippers: pulling with a sliding block including short- and long-leveraged grippers and pushing leveraged grippers, and uses multi-objective evolutionary genetic algorithm to design the ...
Hua Deng, Shi Wei Zhang, Zhang, Shiwei, Qun Ming Li, Qing Hua Qin, Deng H(邓华), Qin QH(秦庆华), Li QM(李群明)   +7 more
core   +1 more source

Nickel‐Catalyzed Three‐Component Difluoroalkylation‐Amination for the Direct Access to Anti‐Inflammatory β‐Difluoroalkyl Amines

Advanced Science, EarlyView.
A nickel‐catalyzed three‐component reductive fluoroalkylation‐amination strategy of N‐vinylamides for the direct access to the α‐amidyl‐β‐difluoroalkyl amines was reported here. The synthetic method features with broad substrate scope, mild conditions, high functional group tolerance, and convenience to handle.
Chang Xu, Fangting Ma, Fan Ding, Luyan Wang, Yunxi Li, Yunzhi He, Xingang Zhang, Siyu He, Dandan Liu   +8 more
wiley   +1 more source

An Iterative Compensation Algorithm for Springback Control in Plane Deformation and Its Application

Chinese Journal of Mechanical Engineering, 2019
In order to solve the springback problem in sheet metal forming, the trial and error method is a widely used method in the factory, which is time-consuming and costly for its non-direction and non-quantitative.
Rui Ma, Chunge Wang, Ruixue Zhai, Jun Zhao   +3 more
doaj   +1 more source

Constitutive Model and Microstructure Evolution Finite Element Simulation of Multidirectional Forging for GH4169 Superalloy

Metals, 2020
This study investigates three processes of multidirectional forging (MDF), namely, closed MDF (CMDF), single-open MDF, and double-open MDF, by using a constitutive equation and a dynamic recrystallization model of hot deformation of the GH4169 superalloy.
Yongbo Jin, Chenyang Xi, Peng Xue, Chunxiang Zhang, Sirui Wang, Junting Luo   +5 more
doaj   +1 more source

NiH‐Catalyzed Enantio‐ and Regioselective Hydroselenylation of Unactivated Alkenes

Advanced Science, EarlyView.
Nickel‐hydride‐catalyzed enantio‐ and regioselective hydroselenylation of unactivated alkenes provides access to chiral organoselenium compounds. Enantiodetermining Ni–H insertion followed by single‐electron diselenide activation generates selenyl radical.
Hyung‐Joon Kang, Jaehun Kim, Sungwoo Hong   +2 more
wiley   +1 more source

Hot-Deformation Behavior and Hot-Processing Maps of AISI 410 Martensitic Stainless Steel

High Temperature Materials and Processes, 2016
The compressive deformation behaviors of 410 martensitic stainless steel were investigated on a Gleeble-1500 thermomechanical simulator, and the experimental stress–strain data were obtained.
Qi Rong-Sheng, Jin Miao, Guo Bao-Feng, Liu Xin-Gang, Chen Lei   +4 more
doaj   +1 more source

Modelling of forging processes assisted by piezoelectric actuators : principles and experimental validation [PDF]

, 2014
This paper presents the modelling of a forging processes assisted by a piezoelectric actuator (PA), which is used to generate specific low frequency vibration waveforms.
NGUYEN, Thanh Hung, ABBA, Gabriel, GIRAUD-AUDINE, Christophe, LEMAIRE-SEMAIL, Betty, Nguyen, T.H., NGUYEN, Thanh Nung, BIGOT, Régis   +6 more
core  

Harnessing Li‐Ion Binding Energy for Solvation‐Guided Electrolyte Additive Design and Robust Solid Electrolyte Interphase Reinforcement

Advanced Science, EarlyView.
A solvation‐guided design strategy for electrolyte additives is established, identifying Li‐ion binding energy as a crucial determinant for effective interface reinforcement. ABSTRACT The rational design of electrolyte systems is essential for stabilizing the electrode−electrolyte interface to enhance the electrochemical performance of lithium‐ion ...
Jooeun Byun, Ho Yeon Jang, Myung‐Jun Kwak, Chae Rim Lee, Chihyun Hwang, Seoin Back, Hyun‐seung Kim   +6 more
wiley   +1 more source

Inverse Design of Pre‐Strain via a Predictive Electromechanical Model for Enhanced Strain Sensing

Advanced Science, EarlyView.
An analytical electromechanical model rooted in microcrack evolution mechanics is globally calibrated from only eight pre‐strain datasets, enabling prediction of the complete sensing response at untested pre‐strain values within the calibrated design space (R2 > 0.99).
Jia‐Chen Shang, Rui Wang, Bo Lu, Ming‐Liang Song, Yu‐Yi Chen, Kuo Han, Xin‐Jie Feng, Bin Sun, Yao‐Guang Cao, Xiao‐Yu Yan, Shi‐Chun Yang   +10 more
wiley   +1 more source