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.

Fracture Toughness of Iron Boride Layers Obtained by Paste Boriding Process

2007 ◽  
Vol 553 ◽  
pp. 21-26 ◽  
Author(s):  
G. Ramírez ◽  
Ivan Campos-Silva ◽  
Alexander S. Balankin
Keyword(s):  
Fracture Toughness ◽  
Boride Layer ◽  
Critical Stress Intensity Factor ◽  
Iron Boride ◽  
Linear Elastic ◽  
Aisi 1045 Steel ◽  
Aisi 1045 ◽  
Fe2b Phase ◽  
Boriding Process ◽  
1045 Steel

The fracture toughness of the Fe2B phase was evaluated in this study. Formation of the Fe2B boride is carried out though paste boriding process applied on AISI 1045 steel surface. The treatment was carried out at temperatures of 1193, 1223 and 1273 K for 6 h using a 5 mm thick boron paste. A Vickers microhardness tester was used to generate microcracks at a load of 200g. The indentations were made across the thickness of the iron boride layer at four different distances from the substrate. The experimental results show that the critical stress intensity factor KIC for the Fe2B phase shows a potential law dependence on crack length; this contradicts the concepts of Linear Elastic Fracture Mechanics, which establish that the fracture toughness value is a constant of the material.

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. 

Mechanical Properties of AISI 1045 Steel Subjected to Combined Loads of Tension and Torsion

2018 ◽  
Vol 42 (4) ◽  
pp. 393-406 ◽  
Author(s):  
G. Zhao ◽  
L. Liu ◽  
D. Wang ◽  
J. Guo ◽  
W. Chen
Keyword(s):  
Mechanical Properties ◽  
Combined Loads ◽  
Aisi 1045 Steel ◽  
Aisi 1045 ◽  
1045 Steel

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

Self-Affine Patterns of Boride Layers

2007 ◽  
Vol 553 ◽  
pp. 27-32
Author(s):  
Ivan Campos-Silva ◽  
G. Ramírez ◽  
Alexander S. Balankin ◽  
R. Torres
Keyword(s):  
Iron Boride ◽  
Boride Coatings ◽  
Roughness Exponent ◽  
Roughness Analysis ◽  
Aisi 1045 Steel ◽  
Aisi 1045 ◽  
Boriding Process ◽  
1045 Steel ◽  
Scion Image ◽  
Growth Experiments

In this study, the evaluation of interfaces on iron boride Fe2B growth obtained by paste boriding process was carried out. Fractal geometry is used like a powerful tool for the roughness analysis present during iron boride growth. Experiments were performed in AISI 1045 steel at temperatures of 1193K for exposure times of 2, 4 and 6 h, and 1223K for treatment times of 2, 4, 5 and 6 h, varying the boron paste thicknesses in the range of 1 – 5 mm for each temperature and time. The fronts of the interfaces in iron boride coatings were characterized and digitized with mean of an optic microscope and Scion Image software. Self-affine methods were applied to the interface growths for validate the fractality of the system. It was established that the interface width, ω , scales to ω (L) ∼ L H , where H represents the roughness exponent of the boride layers.

Sign in / Sign up

Export Citation Format

Share Document