scholarly journals Microstructure control in surface layer of metallic materials by severe plastic deformation and related properties

2013 ◽  
Vol 63 (11) ◽  
pp. 392-399
Author(s):  
Yoshimasa Takayama ◽  
Meiqin Shi
Keyword(s):  
Plastic Deformation ◽  
Surface Layer ◽  
Severe Plastic Deformation ◽  
Metallic Materials ◽  
Microstructure Control

Properties of Metallic Materials after Surface Self Nano-Crystallization

2014 ◽  
Vol 941-944 ◽  
pp. 416-420 ◽  
Author(s):  
Guang Yu Pei ◽  
Dong Li ◽  
Kai Bin Li
Keyword(s):  
Plastic Deformation ◽  
Wear Resistance ◽  
Corrosion Resistance ◽  
Surface Layer ◽  
Severe Plastic Deformation ◽  
Compressive Stress ◽  
High Strength ◽  
Metallic Materials ◽  
Diffusion Property ◽  
Surface Nanocrystallization

Surface Self-nanocrystallization (SSNC) can produce nanometer grains (10~50μm depth) in the surface layer of metallic materials. And high strength, residual compressive stress as well as a mass of defects attributed to grain refinement and severe plastic deformation, greatly improve their surface properties, such as strength, wear resistance, diffusion property, fatigue performance and corrosion resistance. Now some methods have been confirmed which could realize surface nanocrystallization. This paper reviews the study of surface nanocrystallization and simply summarizes changes in their performance based on surface layer microstructure of metallic materials.

Study on Processing Parameters of Supersonic Particles Bombarding Treatment

2013 ◽  
Vol 774-776 ◽  
pp. 1204-1207
Author(s):  
Yu Liang Liu ◽  
Tian Ying Xiong
Keyword(s):  
Plastic Deformation ◽  
Weight Loss ◽  
Surface Layer ◽  
Severe Plastic Deformation ◽  
Orthogonal Design ◽  
Processing Parameters ◽  
Metallic Materials ◽  
Nanostructured Surface ◽  
Orthogonal Experiments ◽  
Treated Sample

Supersonic Particles Bombarding (SSPB) can introduce severe plastic deformation on the surface of metallic materials, and nanostructured surface layer can be fabricated on the materails. So SSPB is a promosing technology which can be applied in industry. Main parameters of SSPB were optimized by orthogonal design, and their effect on the weight loss of the SSPB treated sample was analysed. Optimized parameters were obtained after the orthogonal experiments.

scholarly journals The Characteristics of Creep in Metallic Materials Processed by Severe Plastic Deformation

2019 ◽  
Vol 60 (8) ◽  
pp. 1506-1517 ◽  
Author(s):  
Petr Kral ◽  
Jiri Dvorak ◽  
Vaclav Sklenicka ◽  
Terence G. Langdon
Keyword(s):  
Plastic Deformation ◽  
Severe Plastic Deformation ◽  
Metallic Materials

Reaction of Sn to Nanocrystalline Surface Layer of Cu by Near Surface Severe Plastic Deformation

2007 ◽  
pp. 115-120
Author(s):  
Yoritoshi Minamino ◽  
Yuichiro Koizumi ◽  
Nobuhiro Tsuji ◽  
Y. Nakamizo ◽  
Toshiya Shibayanagi ◽  
...  
Keyword(s):  
Plastic Deformation ◽  
Surface Layer ◽  
Severe Plastic Deformation ◽  
Near Surface

New Type of Device for Achievement of Grain Refinement in Metal Strip

2015 ◽  
Vol 1127 ◽  
pp. 91-97 ◽  
Author(s):  
Stanislav Rusz ◽  
Lubomír Čížek ◽  
Vít Michenka ◽  
Jan Dutkiewicz ◽  
Michal Salajka ◽  
...  
Keyword(s):  
Plastic Deformation ◽  
Grain Size ◽  
Severe Plastic Deformation ◽  
Cross Section ◽  
Circular Cross Section ◽  
Ultrafine Grain ◽  
Metallic Materials ◽  
Forming Process ◽  
Fine Grain ◽  
Extrusion Technology

DRECE - Dual Rolls Equal Channel Extrusion" (dual rolls pressure combined with equal channel extrusion) method is used for production of metallic materials with very fine grain size (hereinafter referred to as UFG structure - Ultrafine Grain Size). During the actual forming process the principle of severe plastic deformation is used. The device is composed of the following main parts: “Nord” type gearbox, electric motor with frequency speed converter, multi-plate clutch, feed roller and pressure rollers with regulation of thrust, and of the forming tool itself – made of Dievar steel type. Metallic strip with dimensions 58×2×1000 mm (width x thickness x length) is inserted into the device. During the forming process the main cylinder in synergy with the pressure roller extrude the material through the forming tool without any change of cross section of the strip. In this way a significant refinement of grain is achieved by severe plastic deformation. This method is used for various types of metallic materials, non-ferrous metals and their alloys. Forming process is based on extrusion technology with zero reduction of thickness of the sheet metal with the ultimate aim - achieving a high degree of deformation in the formed material. The DRECE device is also being verified from the viewpoint of achievement of a UFG structure in a blank of circular cross-section (wire) with diameter of ø 8 mm × 1000 mm (length).

scholarly journals Possibilities of Application Methods Drece in Forming of Non-Ferrous Metals / Możliwości Aplikacyjne Metody Drece Dotyczące Odkształcania Metali Nieżelaznych

2015 ◽  
Vol 60 (4) ◽  
pp. 3011-3016 ◽  
Author(s):  
S. Rusz ◽  
A. Kłyszewski ◽  
M. Salajka ◽  
O. Hilser ◽  
L. Cizek ◽  
...  
Keyword(s):  
Plastic Deformation ◽  
Severe Plastic Deformation ◽  
Cross Section ◽  
Circular Cross Section ◽  
Metallic Materials ◽  
Forming Process ◽  
Fine Grain ◽  
Ferrous Metals ◽  
Metallic Strip ◽  
Non Ferrous Metals

Device “DRECE - Dual Rolls Equal Channel Extrusion” is used for production of metallic materials with very fine grain size (UFG). During the actual forming process the principle of severe plastic deformation is used. Metallic strip with dimensions 57×2×1000 mm is inserted into the device. During the forming process the main cylinder in synergy with the pressure roller extrude the material through the forming tool without any change of cross section of the strip. In this way a significant refinement of grain is achieved by severe plastic deformation. This method is used for various types of metallic materials, non-ferrous metals and their alloys. The DRECE device is also being verified from the viewpoint of achievement of a UFG structure in a blank of circular cross-section (wire) with diameter of ϕ 8 mm × 1000 mm.

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