Results 91 to 100 of about 1,342 (207)

Modelling of Adiabatic Shear Band and Microvoid induced Material Degradation [PDF]

, 2017
International audienceA phenomenon possibly leading to catastrophic failure of high strength materials like steel and titanium alloys during high strain rate loading is the adiabatic shear banding.
Longère, Patrice, Dorothy, H.L.
core  

Microstructural evolution in adiabatic shear localization in Al0.4CoCrFeNi high-entropy alloy

Journal of Materials Research and Technology
The microstructural evolution in adiabatic shear localization in Al0.4CoCrFeNi high-entropy alloy (HEA) was examined through a forced shear technique by a split Hopkinson pressure bar (SHPB) using hat-shaped specimens.
Xiaogang Liu, Lihong Jiang, Zheng Liu, Mingjie Zhao, Zhenghua Guo, Shanlin Wang, Guanliang Xiong, Lin Zhu   +7 more
doaj   +1 more source

Mechanical and microstructural characterization of a HMX-based pressed explosive: Effects of combined high pressure and strain rate

EPJ Web of Conferences, 2012
The paper presents a study of the combined effects of strain rate and confining pressure on the behaviour and microstructure evolutions of a HMX-based explosive.
Biessy M., Lambert P., Trumel H.
doaj   +1 more source

Analysis of Adiabatic Strain Localization Coupled to Ductile Fracture and Melting, with Application and Verification for Simple Shear

AppliedMath
Material failure by adiabatic shear is analyzed in viscoplastic metals that can demonstrate up to three distinct softening mechanisms: thermal softening, ductile fracture, and melting.
John D. Clayton
doaj   +1 more source

Numerical model development and cutting force analysis for high-speed blanking of 22MnB5

Advances in Industrial and Manufacturing Engineering
High-speed blanking (HSB) is an advanced cutting process particularly suitable for high-strength steels. Accurate and physically realistic simulation of this process can help to obtain basic understanding of the process mechanisms, but it is challenging ...
E. Galiev, V. Psyk, H.J. Nallani, M. Linnemann, L. Schottstedt, M. Scholze, O. Schrage, S. Winter, A. Butz, Y.P. Korkolis, M.F.-X. Wagner, M. Dix   +11 more
doaj   +1 more source

Microstructural properties associated with adiabatic shear bands in titanium-aluminum-vanadium deformed by ballistic impact [PDF]

, 2008
The importance of adiabatic shear bands (ASBs) in material failure in terms of dynamic deformation has been the focus and interest of engineers for decades.
Ramirez, Amanda Christine
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Serrated chips morphology and formation mechanism of laser additive manufactured materials for subtractive machining

Journal of Materials Research and Technology
The high-speed cutting process often results in the formation of periodic serrated chips, which can lead to fluctuations in cutting force. These fluctuations can negatively affect machining accuracy, surface roughness, and tool life.
Meng Liu, Guohe Li, Shanshan Zhao, Yujun Cai, Chunzheng Duan   +4 more
doaj   +1 more source

Adiabatic Shear banding in Titanium 15-3-3-3 Alloy [PDF]

, 2013
Shear stresses are a common reason for failure in many industrial applications. Localized shear deformations in certain materials can lead to the formation of adiabatic shear bands.
Akbari, Azin
core  

ADIABATIC SHEAR LOCALIZATION IN AISI 1340 AND 4340 STEELS: THE INFLUENCE OF MICROSTRUCTURE AND GEOMETRY [PDF]

, 2011
The mechanical behaviour of AISI 1340 and 4340 steel under high strain-rate loading in compression and in torsion were investigated using direct impact Hopkinson bar and torsion split Hopkinson bars. Both alloys contained 0.40 wt.
MOSTAGHIMI GHOMI, HOMA
core  

Study on multiscale simulation of dynamic shear and evolution mechanism of adiabatic shear band in titanium alloys

四川大学学报. 自然科学版
To reveal the dynamic failure mechanism of titanium alloys under high strain rates， Ti-10V-2Fe-3Al alloys are studied by integrating JMatPro calculations， the Johnson-Cook （JC） constitutive model， and ABAQUS simulations to investigate the effect of grain
WANG Qing-Wu, CHENG Long-Qing, LIU Xi-Yao, ZHAO Jian-Hao, WANG Hao, LIANG Xiao-Chong   +5 more
doaj