Results 101 to 110 of about 7,880,006 (253)

Effect of surface contamination on electrochemical corrosion behavior of ultrasonic shot peened TA2 alloy

open access: yesJournal of Materials Research and Technology
Ultrasonic shot peening (USSP) is a technique to tune the performance of metallic materials by generating gradient nanocrystalline structure (GNS) as well as residual compressive stress.
Jiaxing Li   +5 more
doaj   +1 more source

Study on the Nanocrystallization Mechanism by Ball Milling and its Application to Surface Nanocrystallization of Bulk Steel Samples.

open access: yesJournal of the Japan Society of Powder and Powder Metallurgy, 2003
The mechanism of nanocrystallization in steels by ball milling was studied. The importance of severe plastic deformation at high strain rate rather than repeated cold-welding was recognized. This idea was confirmed by the nanocrystallization in other deformation methods such as a ball drop, a particle impact and shot peening deformations those can ...
Minoru Umemoto   +2 more
openaire   +2 more sources

Surface Plastic Deformation and Nanocrystallization Mechanism of Welded Joint of 16MnR Steel Treated by Ultrasonic Impact

open access: yesMedžiagotyra, 2015
The welded joint surfaces of 16MnR steel were treated using an ultrasonic impact machine. The effects of ultrasonic impact treating (UIT) on the plastic deformation and nanocrystallization mechanism of the welded joints of 16MnR steel were studied.
Yingxia YU   +4 more
doaj   +1 more source

Nanocrystallization Technology and Corrosion Resistance of#br# Stainless Steel#br#

open access: yesTeshugang, 2008
The surface nanocrystallization technology of stainless steel such as surface mechanical attrition treatment,  shot peering,cross shear rolling and laser surface melting and the bulk nanostructured technology such as mechanical alloy  method,inert  gas ...
郑志军高岩
doaj  

Effect of shot peening on the fatigue properties of nickel-based superalloy GH4169 at high temperature

open access: yesResults in Physics, 2018
This study investigates the influence of shot peening on the fatigue properties of GH4169 alloy at 20 °C, 350 °C and 650 °C in air. Work hardened layer with nanocrystals and deformation twins was generated in GH4169 surface after shot peening ...
Xiaohui Zhao, Hongyang Zhou, Yu Liu
doaj   +1 more source

Anti-buckling design of cylindrical shells by local surface nanocrystallization

open access: yesIOP Conference Series: Materials Science and Engineering, 2019
Abstract A novel surface modification method, namely the surface nanocrystallization technology, is introduced to enhance the anti–buckling performance of the metal cylindrical shells under axial impact loading. The effects of local nanocrystallization layouts are explored by evaluating the critical buckling loads of four local ...
X S Xu   +5 more
openaire   +1 more source

Nanocrystallization of CK60 commercial steel by drilling method [PDF]

open access: yes, 2011
Drilling as a novel Surface Sever Plastic Deformation method (SSPD) has been applied to commercial CK60 steel plate to create a Nano Crystalline (NC) structured layer.
Hashim, Mansor   +3 more
core  

Al és Ti alapú tömbi amorf és nanoszerkezetű kompozitok előállítása és vizsgálata = Preparation and investigation of Al and Ti based amorphous and nanocrystalline bulk comopsites [PDF]

open access: yes, 2012
A Ti-Al alapú ötvözetek magas hőmérsékleten is nagy szilárdágú és kis sűrűségű szerkezeti anyagok. Az eddig használatos technológiák helyett, mi két új technológiát alkalmaztunk: az olvadékból való gyorshűtést és a mechanikai ötvözést.
Csanády, Andrásné   +4 more
core  

Mesoscale computational study of the nano-crystallization of amorphous Ge via a self-consistent atomistic - phase field coupling

open access: yes, 2013
Germanium is the base element in many phase-change materials, i.e. systems that can undergo reversible transformations between their crystalline and amorphous phases. They are widely used in current digital electronics and hold great promise for the next
Marian, Jaime   +2 more
core   +1 more source

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