scholarly journals Influence of Heat Treatment on Residual Stress in Cold-Forged Parts

2014 ◽  
Vol 2014 ◽  
pp. 1-6 ◽  
Author(s):  
Frederico Ozanan Neves ◽  
Thiago Luis Lara Oliviera ◽  
Durval Uchoas Braga ◽  
Alex Sander Chaves da Silva
Keyword(s):  
Heat Treatment ◽  
Residual Stresses ◽  
The Body ◽  
Thermal Treatments ◽  
Cold Forming ◽  
Heat Treated ◽  
Forged Parts ◽  
Aisi 1045 Steel ◽  
Aisi 1045 ◽  
1045 Steel

Residual stresses are those stresses that remain in a body when there is no external load applied. Numerous factors can induce residual stresses in the material, including cold forming. Thermal treatments of steel are widely used because they can improve the mechanical properties of the steel, such as toughness, tenacity, and resistance; however, thermal treatments can also produce residual stresses. This study aims to analyze the residual stresses present in a cold-forged part after heat treatments. Half-cylinder samples of AISI 1045 steel were cold-forged, and a wedge tool was pressed into their surface, causing a strain gradient. The samples were then heat-treated by annealing, normalizing, quenching, or quenching and tempering. A numerical simulation was also performed to aid in choosing the measurement points in the samples. The results show that residual stresses are dependent on the heat treatment and on the intensity and nature of previous residual stresses in the body.

scholarly journals Effect of Speed, Feed and Depth of Cut on Machining Induced Residual Stresses in Aisi 1045 Steel

2019 ◽  
Vol 8 (2) ◽  
pp. 3397-3400 ◽  
Keyword(s):  
Residual Stresses ◽  
Depth Of Cut ◽  
Machining Parameters ◽  
X Ray Diffraction ◽  
Left Behind ◽  
Aisi 1045 Steel ◽  
Aisi 1045 ◽  
Predicted Values ◽  
Future Work ◽  
1045 Steel

Residual stress that are induced during machining of components plays a significant part in the endurance and life of the component. The magnitude and nature of the residual stresses have been of interest to many researchers across the globe. The present work involves methodology to find out the influence of factors on the residual stresses. The machining parameters were varied and the residual stresses were determined using non-destructive method, namely X-ray diffraction. Using statistical methods, the influence of the machining parameters was ascertained. This paper aims at investigating the residual stresses in AISI 1045 steel, induced due to milling. AISI 1045 steel was considered as it is a widely used material and its applications are innumerable. It was observed that speed and feed have significant influence on stresses left behind after the machining is completed. Using statistical techniques a mathematical model was developed which is further used to predict the residual stresses. The error percentage of the predicted values was less than 5%. The results obtained were promising and future work involves the optimization of the machining parameters.

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.

scholarly journals Tempering Effects of Multitrack Laser Surface Heat Treatment of AISI 1045 Steel

2019 ◽  
Vol 31 (3) ◽  
pp. 1091
Author(s):  
Chi-Liang Kung ◽  
Hao-En Shih ◽  
Chao-Ming Hsu ◽  
Cheng-Yi Chen
Keyword(s):  
Heat Treatment ◽  
Surface Heat ◽  
Laser Surface ◽  
Aisi 1045 Steel ◽  
Aisi 1045 ◽  
1045 Steel

PENGARUH PROSES HARDENING BAJA AISI 1045 TERHADAP SIFAT KEAUSAN

2020 ◽  
Vol 8 (2) ◽  
pp. 89-95
Author(s):  
Yosyi Mustafa Rachman ◽  
Ahmad Maulana ◽  
Fatimah Dian Ekawati
Keyword(s):  
Heat Treatment ◽  
Medium Carbon ◽  
Hardening Process ◽  
Average Wear ◽  
Pin On Disc ◽  
Aisi 1045 Steel ◽  
Aisi 1045 ◽  
1045 Steel ◽  
Hardening Heat Treatment ◽  
Main Material

AISI 1045 steel is a steel classified as medium carbon alloy steel which is widely used as the main material in machinery so it must have good mechanical properties such as hardness, wear resistance. The purpose of this study was to determine the effect of heat treatment on the wear rate of AISI 1045 steel. The research method used was AISI 1045 steel which was given a hardening heat treatment with a temperature variation of 800ºC, 850ºC, 900ºC with a holding time of 60 minutes, followed by rapid cooling using water . after that the specimen will be tested for wear by using a standard Pin On Disc. the results of the study show that the wear value at 800ºC has an average wear value of 15.0762 mg / cm², then at a temperature of 850ºC has an average wear value of 11.33933 mg / cm² and at a temperature of 900ºC has an average wear value of 9 9488 mg / cm². In conclusion, there was a very strong influence on the use of hardening temperature variations on the AISI 1045 steel wear and the smallest wear value on the specimen given by the hardening process at 900ºC with an average wear value of 9.9488 mg / cm².

scholarly journals Effect of induction heating on Vickers and Knoop hardness of 1045 steel heat treated

2021 ◽  
pp. 8-15
Author(s):  
J. Merced MARTÍNEZ-VÁZQUEZ ◽  
Gabriel RODRÍGUEZ-ORTIZ ◽  
J. Gregorio HORTELANO-CAPETILLO ◽  
Arnulfo PÉREZ-PÉREZ
Keyword(s):  
Hardened Layer ◽  
Heating Time ◽  
Knoop Hardness ◽  
Mechanical Resistance ◽  
Medium Carbon ◽  
Heat Treated ◽  
Aisi 1045 Steel ◽  
Aisi 1045 ◽  
1045 Steel ◽  
Surface Heat Treatments

AISI 1045 steel is a steel of medium carbon, widely used in machinery, the automotive industry, and the food industry, among others. Therefore, to fulfill its purpose, it is necessary to improve its mechanical resistance, wear resistance and resistance to fatigue through different surface heat treatments. Variables such as heating time and hence speed affect the thickness of the hardened layer and the microstructural characteristics of the area affected by heat treatment. The inspection of the transformation of phases during the treatment and the thickness of the boundary layer is generated by determining the hardness of the material, whose procedure is subject to the ASTM E92-17 and E384-17standards, which establish the methodology to be followed. Therefore, the objective of this work is to quantify the effect of three heating times at 1123 K on the hardening of AISI 1045 steel and the regularity of the hardened layer to ensure its functionality as a component subjected to friction, in addition to developing a table of equivalences between the Knoop (HK), Vickers (HK) and Rockwell C (HRC) hardness scales.

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.

Sign in / Sign up

Export Citation Format

Share Document