Effect of Residual Stress and Microcracks in Chrome Plating Layer to Fatigue Strength of Axle-Shaped Machine Parts

2019 ◽  
Vol 889 ◽  
pp. 10-16
Author(s):  
Vinh Phoi Nguyen ◽  
Thien Ngon Dang ◽  
Chi Cuong Le
Keyword(s):  
Residual Stress ◽  
Fatigue Strength ◽  
Tensile Residual Stress ◽  
Chromium Layer ◽  
Chrome Plating ◽  
Chromium Plating ◽  
Aisi 1045 Steel ◽  
Aisi 1045 ◽  
1045 Steel ◽  
Plating Layer

Chromium plating is used widely in industry to enhance wear, abrasion resistance and to restore the dimensions of undersized parts. However, tensile residual stress always exists in chrome layer because of hydrogen embrittlement so it affect to mechanical properties of the chromium plating machine element, especially in fatigue strength. In this paper, effect of residual stress in chrome plating layer to fatigue strength was studied. The sample (AISI 1045 steel) was plated with 10 and 60 micrometers thicknesses and residual stress in chrome plating layer was determined by X-ray diffraction technique (Cu-Kα radiation). The results showed that chromium layer thicknesses go up, tensile residual stress decrease and microcrack density increase. Consequently, fatigue strength goes down when chromium layer thicknesses increase.

scholarly journals PENGARUH PENGHILANGAN KEKASARAN PERMUKAAN TERHADAP KEKUATAN FATIK = EFFECT OF SURFACE ROUGHNESS REMOVAL TO FATIGUE STRENGTH

2015 ◽  
Vol 9 (3) ◽  
pp. 115-130
Author(s):  
H. Agus Suhartono
Keyword(s):  
Surface Roughness ◽  
Fatigue Life ◽  
Fatigue Strength ◽  
Fatigue Loading ◽  
Bending Fatigue ◽  
Aisi 1045 Steel ◽  
Aisi 1045 ◽  
1045 Steel ◽  
Test Result ◽  
Effect Of Surface

The aim of the study is to investigate and to prove that the fatigue failure of steel is initiated from the surface. Hence the preventif action of smoothening the surface that has been loaded by fatigue loading is very important. The specimen of AISI 1045 Steel is loaded by means of rotary bending fatigue. The fatigue loading will be interupted as the fatigue life reaching 50% of fatigue life and 75% of fatigue life. During the interuption the specimen will be grinded and polished, before tested completely until fatigue fracture occured. The fatigue life of each group of scpecimen based on the art of loading will be compared to the specimen tested by fatigue loading without interuption.The Miner rule is used to evaluated the test result. The influence of interuption and surface treatment is evaluated and analyzed. ABSTRAKTujuan penelitian ini adalah untuk menyelidiki dan membuktikan bahwa kegagalan kelelahan baja dimulai dari permukaan. Oleh karena itu tindakan pencegahan dengan memperhalus permukaan sangat penting untuk mencegah beban kelelahan baja. Spesimen dari AISI 1045 Steel dimuat dengan cara uji kelelahan lentur putar. Kelelahan pemuatan akan disela sebagai umur kelelahan mencapai 50% dari umur kelelahan dan 75% dari umur kelelahan. Selama gangguan lainnya yang spesimen akan digiling dan dipoles, sebelum diuji benar-benar sampai patah akibat kelelahan yang terjadi. Umur kelelahan dari setiap kelompok specimen diuji berdasarkan beban akan dibandingkan dengan spesimen oleh kelelahan bongkar tanpa aturan. The Miner rule digunakan untuk mengevaluasi hasil tes. Pengaruh gangguan lainnya dan perlakuan permukaan dievaluasi dan dianalisis. 

scholarly journals Effect of Cutting Conditions on the Residual Stresses Induced by Milling of AISI 1045 Steel

2019 ◽  
Vol 8 (2) ◽  
pp. 1462-1465 ◽  
Keyword(s):  
Residual Stress ◽  
Residual Stresses ◽  
Diffraction Method ◽  
Cutting Conditions ◽  
Depth Of Cut ◽  
Machining Processes ◽  
Machined Surface ◽  
Aisi 1045 Steel ◽  
Aisi 1045 ◽  
1045 Steel

The nature of residual stresses caused by machining processes has been relevant to the study of component performance for decades. The concept that cutting parameters affect the magnitude and nature of residual stress is well known. In order to reduce the residual stresses on a machined surface, it is important to identify the extent of the effect of cutting conditions. This paper presents the effect of depth of cut and tool speed on milling induced residual stresses. Speed and depth of cut were varied when milling several AISI 1045 Steel specimens. Stresses were measured with the X-ray diffraction method and corroborated with mathematical modelling on an FEA software. A relationship between tool speed and residual stress, and depth of cut and residual stress was thus obtained.

Influence of laser polishing on the high cycle fatigue strength of medium carbon AISI 1045 steel

2011 ◽  
Vol 33 (11) ◽  
pp. 1477-1489 ◽  
Author(s):  
R. Avilés ◽  
J. Albizuri ◽  
A. Lamikiz ◽  
E. Ukar ◽  
A. Avilés
Keyword(s):  
Fatigue Strength ◽  
High Cycle Fatigue ◽  
Cycle Fatigue ◽  
Medium Carbon ◽  
Laser Polishing ◽  
Aisi 1045 Steel ◽  
Aisi 1045 ◽  
1045 Steel

scholarly journals Effect of Boriding on the Mechanical Properties of AISI 1045 Steel

2009 ◽  
Vol 65 ◽  
pp. 63-68 ◽  
Author(s):  
G. Rodríguez-Castro ◽  
Ivan Campos-Silva ◽  
José Martínez-Trinidad ◽  
U. Figueroa-López ◽  
D. Meléndez-Morales ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Fatigue Strength ◽  
Boride Layer ◽  
High Porosity ◽  
Coating Failure ◽  
Aisi 1045 Steel ◽  
Aisi 1045 ◽  
Rotating Bending ◽  
Boriding Process ◽  
1045 Steel

Some mechanical properties of AISI 1045 borided steels were estimated in the present work. The boriding process was carried out by the powder pack method at 950°C with 8 h of treatment. The fatigue strength on borided notched specimens was evaluated with rotating bending tests (R=1) considering a stress concentration factor (Kt) of 2.53. Likewise, the presence of residual stresses in boride layers was established by the XRD technique. The Daimler-Benz Rockwell C test was used, also, to estimate the strength adhesion of the coated system. The results show a decrease in the fatigue strength of AISI borided steels due to the presence of high porosity in the layers. Finally, the Rockwell-C adhesion test showed no coating failure for the boride layer.

Turning parameters effects in residual stresses of AISI 1045 steel

2021 ◽  
pp. 095440542199011
Author(s):  
Guilherme Roberto dos Santos Biasibetti ◽  
Rafael Menezes Nunes ◽  
Luiz Carlos de Cesaro Cavaler ◽  
Guilherme Vieira Braga Lemos ◽  
Alexandre da Silva Rocha
Keyword(s):  
Residual Stress ◽  
Residual Stresses ◽  
Feed Rate ◽  
Rake Angle ◽  
Surface Finishing ◽  
Nose Radius ◽  
Aisi 1045 Steel ◽  
Aisi 1045 ◽  
1045 Steel ◽  
Tool Nose Radius

The main objective of this work was to evaluate the influence of turning parameters on the generation of residual stresses in AISI 1045 steel bars. Therefore, effects of four main parameters as feed rate, cutting velocity, tool nose radius, and rake angle were analyzed. Residual stresses investigation through X-ray diffraction (XRD) was carried out at different depths (surface, 5, 10, 20, 50, and 75 μm). As the samples showed distinct roughness patterns with variable amplitude and shape, and based in a previous work, samples were classified in two main groups accordingly with surface finishing (regular and irregular). The current results showed that feed rate and cutting speed played the major influence on residual stress distributions. Moreover, the tool nose radius affected surface residual stresses, whereas the rake angle did not significantly change it. Finally, samples could be divided in two residual stress groups, showing a direct relation of surface finishing quality and residual stresses.

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