scholarly journals Using Acoustic Emission for Measuring Surface Roughness

2020 ◽  
Vol 23 (3) ◽  
pp. 150-154
Author(s):  
Jakub Rozlivka ◽  
Václav Kašpar ◽  
Petr Dostál ◽  
Michal Černý ◽  
Benjamín Hajtman ◽  
...  
Keyword(s):  
Surface Roughness ◽  
Acoustic Emission ◽  
Manganese Steel ◽  
Spheroidal Graphite ◽  
Graphite Cast Iron ◽  
Three Samples ◽  
Measuring Surface ◽  
Austenitic Manganese ◽  
Visible Effect ◽  
Measurement Surface

AbstractThis paper is focused on exploring and utilizing the acoustic emission and its behaviour during surface roughness measurement. Surface quality or coating properties significantly affect the reliability and durability of operations. Three samples were selected for an experiment to demonstrate the possibility of measuring the roughness of surface textures by means of acoustic emission method (AE). These samples were made of the following materials: sample A2 – EN 54SiCr6 steel formed in water, austenitized at 850 °C for 20 minutes, sample A3 – non-heat-treated spheroidal graphite cast iron, and sample B5 – abrasion resistant austenitic manganese steel. The surfaces were subjected to the same surface treatments (roughness Ra = 1.6–3.2 μm) and measured under the same conditions. All possible measurements were measured on both x- and y-axes. Final results are presented graphically. The measured AE values showed a visible effect in the AE signals due to the lack of surface roughness.

scholarly journals The influence of vibratory shot peening on the selected properties of the surface layer elements made of cast iron

Mechanik ◽  
2019 ◽  
Vol 92 (11) ◽  
pp. 739-741
Author(s):  
Kazimierz Zaleski ◽  
Agnieszka Skoczylas
Keyword(s):  
Residual Stress ◽  
Surface Roughness ◽  
Surface Layer ◽  
Cast Iron ◽  
Shot Peening ◽  
Experimental Investigations ◽  
Spheroidal Graphite ◽  
Absolute Value ◽  
Spheroidal Graphite Cast Iron ◽  
Graphite Cast Iron

The results of experimental investigations influence of vibratory shot peening on surface roughness and residual stress of spheroidal graphite cast iron objects were presented. The surfaces before vibratory shot peening were milled using different feed. After vibratory shot peening surface roughness Ra = 0.7÷0.9 μm was obtained and in surface layer compressive residual stress, with the maximum (absolute) value from 170 MPa to 330 MPa at a depth 0.4÷0.7 mm have been formed. For accepted vibratory shot peening condition it was recommended to use time of about 8 minutes.

CLIMAX 6Mn-1Mo Alloy

Alloy Digest ◽  
1976 ◽  
Vol 25 (4) ◽  
Keyword(s):  
Wear Resistance ◽  
Manganese Content ◽  
Heat Treating ◽  
Manganese Steel ◽  
Hadfield Steel ◽  
Austenitic Manganese Steel ◽  
Austenitic Manganese ◽  
The Many ◽  
Cast Condition ◽  
Lower Carbon

Abstract Climax 6Mn-1Mo alloy is a lean austenitic manganese steel which develops a structure similar to that of the well-known Hadfield manganese steel after heat treatment. A lower carbon version of this alloy has been developed to give satisfactory performance in the as-cast condition. Largely because of lower manganese content, these alloys have better abrasion resistance but lower toughness and ductility than Hadfield steel. Both alloys are designed for the many applications where a combination of good wear resistance and moderate toughness is desirable. This datasheet provides information on composition, hardness, and tensile properties as well as fracture toughness. It also includes information on wear resistance as well as casting, heat treating, machining, joining, and surface treatment. Filing Code: SA-322. Producer or source: Climax Molybdenum Company, A Division of Amax Inc..

Color Etching for Characterization the Grain Orientation in Spheroidal Graphite Cast Iron

2007 ◽  
Vol 537-538 ◽  
pp. 389-396 ◽  
Author(s):  
Ibolya Kardos ◽  
Zoltán Gácsi ◽  
Péter János Szabó
Keyword(s):  
Cast Iron ◽  
Crystallographic Orientation ◽  
Grain Orientation ◽  
Test Material ◽  
Spheroidal Graphite ◽  
Metallic Materials ◽  
Additional Information ◽  
Spheroidal Graphite Cast Iron ◽  
Graphite Cast Iron ◽  
Back Scattering

Color etching is a widely used technique for visualizing different phases in metallic materials. Its advantage to the traditional etching techniques is that it gives additional information within one phase, namely, the color shade of a given phase can change in a certain range. This paper demonstrates that, due to the physics of the color etching, the shade of a phase also depends on the crystallographic orientation of the investigated grain. As a test material, spheroidal graphite cast iron was used, and individual grain orientation was identified by automated electron back scattering diffraction (EBSD). Results showed that there is a strong correlation between grain orientation and the shades obtained by color etching.

Progress of erosive wear in spheroidal graphite cast iron

Wear ◽  
1996 ◽  
Vol 198 (1-2) ◽  
pp. 150-155 ◽  
Author(s):  
K. Shimizu ◽  
T. Noguchi ◽  
T. Kamada ◽  
H. Takasaki
Keyword(s):  
Cast Iron ◽  
Erosive Wear ◽  
Spheroidal Graphite ◽  
Spheroidal Graphite Cast Iron ◽  
Graphite Cast Iron
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