Efek perlakuan panas terhadap retakan pada bahan aisi 1045

2019 ◽  
Vol 8 (1) ◽  
pp. 698
Author(s):  
Akhyar Ibrahim
Keyword(s):  
Aisi 1045

Baja SAE/AISI 1045 merupakan salah satu jenis baja karbon yang banyak dimanfaatkan untuk berbagai komponen dan konstruksi mesin. Namun demikian, dalam kondisi operasi dan konstruksi baja AISI 1045 seringkali terjadi kegagalan, akibat retakan yang timbul pada proses pengecoran, pabrikasi dan atau perlakuan panas. Karena itu, tujuan penelitian ini adalah untuk menemukan pengaruh hardening dan tempering terhadap kekerasan dan struktur mikro, dan retakan, Data penelitian ini dikumpulkan melalui studi kepustakaan dan uji laboratorium, kemudian dianalisis dengan menggunakan metode deskriptif Hasil penelitian menunjukkan bahwa (1) makin tinggi suhu pemanasan, makin tinggi harga kekerasan, (2) makin tinggi waktu penahanan, makin tinggi harga kekerasan, kecuali pada suhu 1000”C ketika waktu penahanan tinggi, harga kekerasan turun, (3) Hasil analisis struktur mikro dan makro menunjukkan bahwa makin tinggi suhu pemanasan makin tinggi retak guench, dan makin tinggi waktu penahanan makin tinggi juga retak guench. dengan jenis patah antar-batas-butir (intergranular), dan (4) makin tinggi suhu pemanasan makin tebal lapisan dekarburasi serelah hardening bahan tersebut.Kata kunci: AISI 1045, hardening, tempering, kekerasan, retak

Fuzzy Modeling to Simulate Surface Roughness in CNC Turning of AISI 1045 Steel

2011 ◽  
Vol 486 ◽  
pp. 262-265
Author(s):  
Amit Kohli ◽  
Mudit Sood ◽  
Anhad Singh Chawla
Keyword(s):  
Experimental Data ◽  
Surface Roughness ◽  
Process Parameters ◽  
Fuzzy Model ◽  
Fuzzy Modeling ◽  
Cnc Machine ◽  
Model Based ◽  
Aisi 1045 Steel ◽  
Aisi 1045 ◽  
1045 Steel

The objective of the present work is to simulate surface roughness in Computer Numerical Controlled (CNC) machine by Fuzzy Modeling of AISI 1045 Steel. To develop the fuzzy model; cutting depth, feed rate and speed are taken as input process parameters. The predicted results are compared with reliable set of experimental data for the validation of fuzzy model. Based upon reliable set of experimental data by Response Surface Methodology twenty fuzzy controlled rules using triangular membership function are constructed. By intelligent model based design and control of CNC process parameters, we can enhance the product quality, decrease the product cost and maintain the competitive position of steel.

scholarly journals Evaluation of the characteristics of an AISI 1045 steel quenched in different concentration of polymer solutions of polyvinylpyrrolidone

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Eduardo da Rosa Vieira ◽  
Luciano Volcanoglo Biehl ◽  
Jorge Luis Braz Medeiros ◽  
Vagner Machado Costa ◽  
Rodrigo Jorge Macedo
Keyword(s):  
Microstructural Characterization ◽  
Exchange Capacity ◽  
X Ray Diffraction ◽  
Thermal Exchange ◽  
The Core ◽  
Aisi 1045 Steel ◽  
Aisi 1045 ◽  
Quench Hardening ◽  
Polymeric Solutions ◽  
1045 Steel

AbstractQuench hardening aims at the microstructural transformation of steels in order to improve hardness and mechanical strength. The aim phase is, in most cases, the martensite. It is necessary to heat the material until it obtains its austenitization and quenching by immersion in a fluid. Currently, it is common to use watery polymeric solutions in this procedure. These fluids, which are the mixture of polymers in water, vary their thermal exchange capacity depending on the concentrations applied. The increase in concentration minimizes the removal of heat from the part, reducing the formation capacity of martensite, and developing a lower hardness and strong steel. In this work, microstructural characteristics and properties of AISI 1045 steel quenched in solutions based on polyvinylpyrrolidone (PVP) in 10, 15, 20, and 25% concentration were evaluated. The microstructural characterization quantified the percentage of the phases in each concentration, demonstrating a reduction of martensite as the concentrations were high. The investigation of the samples by x-ray diffraction confirmed the absence of austenite retained in the material. Furthermore, a microhardness scale between the core and the surface was constructed, in which a reduction gradient of the indices of this property towards the core of the sample was evidenced.

Considering the influence of heating rate, complex hardening and dynamic strain aging in AISI 1045 machining: experiments and simulations

CIRP Annals ◽  
2021 ◽  
Author(s):  
Friedrich Bleicher ◽  
Christian Baumann ◽  
Stephan Krall ◽  
Steven P. Mates ◽  
Sibylle Herzig ◽  
...  
Keyword(s):  
Heating Rate ◽  
Dynamic Strain Aging ◽  
Strain Aging ◽  
Dynamic Strain ◽  
Aisi 1045 ◽  
Complex Hardening

3D modeling and experimental investigation for tool deflection in end mill cutting of AISI 1045

2021 ◽  
Author(s):  
Ankit Thakur ◽  
Gurmeet Singh ◽  
Navdeep Minhas ◽  
Varun Sharma ◽  
Anuj Bansal
Keyword(s):  
Experimental Investigation ◽  
3D Modeling ◽  
Tool Deflection ◽  
End Mill ◽  
Aisi 1045

Hybrid soft machining of AISI 1045 by turn-rolling and its advantages

2021 ◽  
Vol 32 ◽  
pp. 196-204
Author(s):  
P. Kuhlemann ◽  
B. Denkena ◽  
T. Grove
Keyword(s):  
Aisi 1045

scholarly journals Correction and accuracy improvement of non-parallel shear zone model

2018 ◽  
Vol 207 ◽  
pp. 02002
Author(s):  
Yaoke Wang ◽  
Meng Kou ◽  
Wei Ding ◽  
Huan Ma ◽  
Liangshan Xiong
Keyword(s):  
Experimental Data ◽  
Cutting Force ◽  
Shear Zone ◽  
Coordinate Transformation ◽  
Chip Thickness ◽  
Zone Model ◽  
Aisi 1045 Steel ◽  
Aisi 1045 ◽  
Experimental Values ◽  
1045 Steel

When applying the non-parallel shear zone model to predict the cutting process parameters of carbon steel workpiece, it is found that there is a big error between the prediction results and the experimental values. And also, the former approach to obtain the relevant cutting parameters of the non-parallel shear zone model by applying coordinate transformation to the parallel shear zone model has a theoretical error – it erroneously regards the determinant (|J|) of the Jacobian matrix (J) in the coordinate transformation as a constant. The shape of the shear zone obtained when |J| is not constant is drew and it is found that the two boundaries of the shear zone are two slightly curved surfaces rather than two inclined planes. Also, the error between predicted values and experimental values of cutting force and cutting thrust is slightly smaller than that of constant |J|. A corrected model where |J| is a variable is proposed. Since the specific values of inclination of the shear zone (α, β), the thickness coefficient of the shear zone (as) and the constants related to the material (f0, p) are not given in the former work, a method to obtain the above-mentioned five constants by solving multivariable constrained optimization problem based on experimental data was also proposed; based on the obtained experimental data of AISI 1045 steel workpiece cutting force, cutting thrust, chip thickness, the results of five above-mentioned model constants are obtained. It is found that, compared with prediction from uncorrected model, the cutting force and cutting thrust of AISI 1045 steel predicted by the corrected model with the obtained constants has a better agreement with the experimental values obtained by Ivester.

Ductile failure model for the description of AISI 1045 behavior under different loading conditions

2009 ◽  
Vol 13 (3) ◽  
pp. 215-231 ◽  
Author(s):  
Hermann Autenrieth ◽  
Volker Schulze ◽  
Norman Herzig ◽  
Lothar W. Meyer
Keyword(s):  
Ductile Failure ◽  
Loading Conditions ◽  
Failure Model ◽  
Aisi 1045
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