Investigation of Effects of Heat Treatment Process on Hardness with Respect to Strength for Carbon Steel (AISI 1020)

2020 ◽  
Author(s):  
Rupendra Tanwar ◽  
Pradhyumn Soni ◽  
Sameer Quraishi ◽  
Sujay Kankariya Jain ◽  
Sujay Yadav
Keyword(s):  
Heat Treatment ◽  
Carbon Steel ◽  
Treatment Process ◽  
Heat Treatment Process ◽  
Steel Aisi

scholarly journals S55c Carbon Steel for Heat Treatment Process with Different Medium in Attenuation Measurement using Ultrasonic Testing

2018 ◽  
Vol 7 (4.35) ◽  
pp. 527
Author(s):  
Kharudin Ali ◽  
Johnny Koh Siaw Paw ◽  
M.Aizat M.Sulaiman ◽  
Ahmed N. Abdalla ◽  
Chong Kok Hen ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Carbon Steel ◽  
Ultrasonic Testing ◽  
Treatment Process ◽  
Excitation Frequency ◽  
Flaw Detection ◽  
Crack Identification ◽  
Heat Treatment Process ◽  
Attenuation Measurement ◽  
Quenching Process

Ultrasonic testing or commonly known as UT is one of the non-destructive testing technique and widely used in oil and gas industrial inspection. This technique mostly used in defect or crack identification of the pipeline and also used for flaw detection/evaluation, dimensional measurements, and material characterization. This paper presents the effect of heat treatment for S55C carbon steel in attenuation measurement by using ultrasonic testing including annealing, tempering, and quenching process.  Seawater and oil are used as a medium of quenching process. The fixed excitation frequency at 4 MHz is used and 0 degrees with double crystal is implemented in this measurement. The thicknesses of blocks used are as the sample from 30mm until 80mm. The result shows that the measurement of material attenuation will be decreased after annealing, tempering and quenching process from 40% until 99% compared to before the heat treatment process. The highest attenuation decreasing can be seen on the sample block with the 30mm thickness in the heat treatment process.  

Stress Measurement in Carbon Steel by Magnetic Barkhausen Noise Technique

2017 ◽  
Vol 751 ◽  
pp. 213-218
Author(s):  
Mai Noipitak
Keyword(s):  
Heat Treatment ◽  
Residual Stress ◽  
Carbon Steel ◽  
Tensile Stress ◽  
Treatment Process ◽  
Stress Measurement ◽  
Barkhausen Noise ◽  
Heat Treatment Process ◽  
Magnetic Barkhausen Noise ◽  
The Relationship

The Magnetic Barkhausen Noise (MBN) technique can evaluate the residual stresses in carbon steel and provide information about the relationship between residual stress level and MBN signal. This research work is based on the analysis of MBN signals obtained from carbon steel samples. ASTM A36 and A516 carbon steel were used to vary the residual stress by heat treatment process with 5 conditions: annealing, normalizing, quenching in oil, quenching in water and quenching in salt water. The microstructure and hardness of samples also were varied by these heat treatment processes. Twelve samples (including base materials) were cut to analyze the microstructure and hardness by the microscope and hardness testing machine. Reference materials from each condition were established to represent the MBN signals. The MBN technique was used to evaluate the residual stresses from heat treatment process on each reference material. Then each sample was prepared to tensile specimen. All specimens were applied static tension load below yield point. The load was increased at 25 N/mm2 (MPa) in increment. Each tensile stress level was measurement by MBN technique at 0 and 90 degree of direction of tension axis. The experimental results found that the MBN signal amplitude changed as the condition of heat treatment changed and the relationship between tensile stress and MBN signal showed linear correlation. This research is useful to understand and guide for establishing the reference materials for residual stress measurement by MBN technique.

scholarly journals PENGARUH MEDIA QUENCHING TERHADAP KEKERASAN DAN STRUKTUR MIKRO PASKA HARDFACING

2018 ◽  
Vol 3 (2) ◽  
pp. 66-72
Author(s):  
Basori Basori
Keyword(s):  
Heat Treatment ◽  
Carbon Steel ◽  
Treatment Process ◽  
Low Carbon Steel ◽  
Optical Microscope ◽  
Heat Treatment Process ◽  
Low Carbon ◽  
Water Media

AbstrakHardfacing dengan proses SMAW merupakan salah satu teknik yang paling banyak digunakan, karena sangat mudah diaplikasikan seperti pada scoops lift buckets , Ripper Teeth, dan Dozer Blades.. Hardfacing pada komponen ini bertujuan untuk mencegah keausanan yang diakibatkan benturan atau gesekan saat penggalian tanah, pengumpulan tanah, pengangkutan tanah pada saat alat berat sedang bekerja. Setelah baja karbon rendah di hardfacing, kemudian dilakukan perlakuan panas dengan Quenching dengan tujuan lebih meningkatkan kekerasan dari material. Pembuatan spesimen dilakukan dengan teknik SMAW polaritas AC arus 100A menggunakan elektroda HV 450 kemudian spesimen di potong, di lakukan proses heat treatment. Setelah selesai kemudian speseimen di uji keras dan dilakukan pengamatan dengan mikroskop optik. Media air merupakan media yang paling optimal dalam menigkatkan kekerasan dari hasil hardfacing. Nilai kekerasan yang didapatkan dari hasil quenching dengan media air adalah sebesar 422.66 VHNKata kunci: Hardfacing, SMAW, Struktur Mikro dan Kekerasan AbstractHardfacing with the SMAW process is one of the most common techniques, because it is very easy to apply as in lift buckets Scoops, Ripper Teeth, and Dozer Blades. Hardfacing in this component for the situation caused by collisions or friction during excavation of land, transporting the soil when the machine is working. After low carbon steel hardfacing, then heat is done with quenching in order to increase the hardness of the material. The making of specimens was carried out using the SMAW technique using HV 450 electrodes and then the specimens were cut, and the heat treatment process was carried out. After completion, the experiment was carried out and an observation with an optical microscope was carried out. Water media is the most optimal media in increasing the hardness of hardfacing results. The value obtained from the quenching with water media is 422.66 VHN Keywords: Hardfacing, SMAW, Microstructure and Hardness

Study on Thickness of Low Carbon Steel in Rapid Cooling Process: A Short Review

2020 ◽  
Vol 4 (1) ◽  
pp. 52-59
Author(s):  
Siti Noradila Abdullah ◽  
Norazlianie Sazali ◽  
Ahmad Shahir Jamaludin
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Carbon Steel ◽  
Carbon Content ◽  
Treatment Process ◽  
Low Carbon Steel ◽  
Case Hardening ◽  
Heat Treatment Process ◽  
Low Carbon ◽  
Molecular Arrangement

For any process that engaged with changes of chemical properties and physical is a heat treatment process by cooling or heating a metal. The technique for heat treatment includes, case hardening, annealing, tempering and precipitation strengthening, quenching and tempering. The mechanical properties like hardness, toughness and ductility can be altered by intense heat treating on steel to produce different mechanical properties. This matters with the carbon content in low carbon steel such as mild steel with above 0.4% carbon, in Medium carbon steel with above 0.8% carbon, and in High Carbon Steel with up to 2% carbon content in steels. To change the characteristics of metals and alloys is by heat treatment process where by altering the diffusion and cooling rate within its microstructure to make them suitable for any kind of usage by changing the grain size at different phases and changing the molecular arrangement.

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