scholarly journals Research on Plastic Working

2020 ◽  
Vol 69 (2) ◽  
pp. 187
Author(s):  
Yoichi Takahashi
Keyword(s):  
Plastic Working

scholarly journals Basic Studies of Plastic Working with Vibration : 2nd Report, Basis of Vibro-Indentation Hardness Testing

1974 ◽  
Vol 17 (114) ◽  
pp. 1547-1554
Author(s):  
Masao MIZUNO ◽  
Takahiko KUNO ◽  
Shigetoshi MIYAZAWA ◽  
Hiromi NAKANISHI ◽  
Toyoichiro NOJIMA ◽  
...  
Keyword(s):  
Indentation Hardness ◽  
Hardness Testing ◽  
Plastic Working ◽  
Basic Studies

Improvement in Mechanical Properties of Magnesium Alloy (AZ31) Sheet Fabricated by Casting and Subsequent Plastic Working

2003 ◽  
Vol 439 ◽  
pp. 227-232
Author(s):  
Jae Wan Song ◽  
Chang Won Kim ◽  
Jeong Whan Han ◽  
Mok Soon Kim ◽  
Sun Keun Hwang
Keyword(s):  
Mechanical Properties ◽  
Magnesium Alloy ◽  
Plastic Working ◽  
Alloy Az31 ◽  
Magnesium Alloy Az31 ◽  
Az31 Sheet

scholarly journals Evaluation of Structure and Corrosion Behavior of FeAl Alloy after Crystallization, Hot Extrusion and Hot Rolling

Materials ◽  
2020 ◽  
Vol 13 (9) ◽  
pp. 2041
Author(s):  
Janusz Cebulski ◽  
Dorota Pasek ◽  
Bartosz Chmiela ◽  
Magdalena Popczyk ◽  
Andrzej Szymon Swinarew ◽  
...  
Keyword(s):  
Corrosion Resistance ◽  
Hot Rolling ◽  
Cast Alloy ◽  
Rolling Direction ◽  
Extrusion Direction ◽  
Electrochemical Corrosion ◽  
Hot Extrusion ◽  
Corrosion Current ◽  
Plastic Working ◽  
Ingot Axis

The paper presents the results of tests on the corrosion resistance of Fe40Al5Cr0.2TiB alloy after casting, plastic working using extrusion and rolling methods. Examination of the microstructure of the Fe40Al5Cr0.2TiB alloy after casting and after plastic working was performed on an Olympus GX51 light microscope. The stereological relationships of the alloy microstructure in the state after crystallization and after plastic working were determined. The quantitative analysis of the structure was conducted after testing with the EBSD INCA HKL detector and the Nordlys II analysis system (Channel 5), which was equipped with the Hitachi S-3400N microscope. Structure tests and corrosion tests were performed on tests cut perpendicular to the ingot axis, extrusion direction, and rolling direction. As a result of the tests, it was found that the crystallized alloy has better corrosion resistance than plastically processed material. Plastic working increases the intensity of the electrochemical corrosion of the examined alloy. It was found that as-cast alloy is the most resistant to corrosion in a 5% NaCl compared with the alloys after hot extrusion and after hot rolling. The parameters in this study show the smallest value of the corrosion current density and corrosion rate as well as the more positive value of corrosion potential.

Fatigue Strength of Shaft with Diameter Enlarged Partially by Cyclic Bending and Axial Compressive Loading

2012 ◽  
Vol 217-219 ◽  
pp. 2346-2350 ◽  
Author(s):  
Xia Zhu ◽  
Nagatoshi Okabe ◽  
Keiji Ogi ◽  
Manabu Takahashi
Keyword(s):  
Finite Element ◽  
Fatigue Strength ◽  
Notch Root ◽  
Compressive Loading ◽  
Mechanical Damage ◽  
Fatigue Tests ◽  
Stress And Strain ◽  
Plastic Working ◽  
Bending Fatigue ◽  
Hardness Values

This paper experimentally and analytically investigates the fatigue strength and of mechanical damage of the processed shafts. First, we carry out rotary bending fatigue tests and investigate the fatigue strength for smooth specimens, specimen made only using cutting work, and specimens processed using a new plastic working developed originally. Secondly, we measure the Vickers hardness values to investigate strain hardening near the processed part. Finally, we simulate stress and strain distributions of the shaft during the processing using finite element method (FEM) and calculate the stress concentration rate at the notch root of the processed part. Based on the processing experiments and the finite element analyses (FEA), we clarify that the plastic work mechanically does not reduce the fatigue strength of shafts in the processing range.

scholarly journals The Production of Material with Ultrafine Grain Structure in Al-Zn Alloy in the Process of Rapid Solidification

2014 ◽  
Vol 14 (2) ◽  
pp. 57-62
Author(s):  
M. Szymaneka ◽  
B. Augustyn ◽  
D. Kapinos ◽  
S. Boczkal ◽  
J. Nowak
Keyword(s):  
Rapid Solidification ◽  
Melt Spinning ◽  
Hot Extrusion ◽  
High Strength ◽  
Strength Properties ◽  
Grain Structure ◽  
Ultrafine Grain ◽  
Plastic Working ◽  
Metal Treatment ◽  
Ultrafine Grain Structure

Abstract In the aluminium alloy family, Al-Zn materials with non-standard chemical composition containing Mg and Cu are a new group of alloys, mainly owing to their high strength properties. Proper choice of alloying elements, and of the method of molten metal treatment and casting enable further shaping of the properties. One of the modern methods to produce materials with submicron structure is a method of Rapid Solidification. The ribbon cast in a melt spinning device is an intermediate product for further plastic working. Using the technique of Rapid Solidification it is not possible to directly produce a solid structural material of the required shape and length. Therefore, the ribbon of an ultrafine grain or nanometric structure must be subjected to the operations of fragmentation, compaction, consolidation and hot extrusion. In this article the authors focussed their attention on the technological aspect of the above mentioned process and described successive stages of the fabrication of an AlZn9Mg2.5Cu1.8 alloy of ultrafine grain structure designated for further plastic working, which enables making extruded rods or elements shaped by the die forging technology. Studies described in the article were performed under variable parameters determined experimentally in the course of the alloy manufacturing process, including casting by RS and subsequent fragmentation.

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