MACHINABILITY IMPROVEMENT THROUGH HEAT TREATMENT IN 8620 LOW-CARBON ALLOYED STEEL

2009 ◽  
Vol 13 (4) ◽  
pp. 529-542 ◽  
Author(s):  
Luis Felipe Verdeja ◽  
José Ignacio Verdeja ◽  
Roberto González
Keyword(s):  
Heat Treatment ◽  
Alloyed Steel ◽  
Low Carbon

Fast Salt Bath Heat Treatment for a Bainitic/Martensitic Low-Carbon Low-Alloyed Steel

2015 ◽  
Vol 46 (11) ◽  
pp. 5343-5349
Author(s):  
Julia Urbanec ◽  
Ari Saastamoinen ◽  
Seppo Kivivuori ◽  
Seppo Louhenkilpi
Keyword(s):  
Heat Treatment ◽  
Salt Bath ◽  
Alloyed Steel ◽  
Low Carbon ◽  
Low Alloyed Steel

scholarly journals Study on the Influence of Carbon on Standardized and Non-Standardized Steel

2019 ◽  
Vol 16 (1) ◽  
pp. 14-18
Author(s):  
Liviu Dorin Pop
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Carbon Steel ◽  
Low Carbon Steel ◽  
Heat Treating ◽  
Alloyed Steel ◽  
Basic Knowledge ◽  
Low Carbon ◽  
Close Link ◽  
High Alloyed Steel

Abstract The way a piece or tool behaves in operation is determined by the quality of the material from which it is made, the precision of execution and heat treatment applied. In the present research, it is highlighted the differences that take shape after heat treating different materials (low carbon steel and high alloyed steel) including heating to dissimilar austenitic phases (880°C and 1020°C), holding for non-identical times, tempering at low temperature (260 °C) and then cooling by using separate cooling mediums (oil, air and water). The results show no noticeable increase in the hardness and mechanical properties for the low carbon steel after the heat treatment, but on the other hand, the high alloyed steel, reveals distinguishable changes in both hardness and mechanical properties. There is a close link between the structure, the parameters of the thermal processes and the properties that are desired so that future specialists have to assimilate the basic knowledge related to the phenomena that occur during a heat treatment but at the same time it is important to equip the companies with machines and measure devices, like a spectrometer.

scholarly journals Features of the ferrite-bainite structure low-alloy low-carbon steel after heat hardening and subsequent tempering

2021 ◽  
pp. 33-47
Author(s):  
L.M. Deineko ◽  
A.Yu. Borysenko ◽  
A.О. Taranenko ◽  
T.O. Zaitseva ◽  
N.S. Romanova
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Controlled Rolling ◽  
Alloyed Steel ◽  
Low Alloy Steels ◽  
Low Carbon ◽  
Finished Steel ◽  
Bainite Structure ◽  
Bainitic Structure ◽  
Low Alloyed Steel

Problem statement. In recent decades, there has been a tendency to increase the mechanical properties of low-carbon, low-alloyed steel plate iron by using controlled rolling or hardening heat treatment of finished steel parts. At the same time, for welded parts, the most suitable is a metal having a ferrite-bainite (or bainite) structure. The work investigated the features of the ferrite-bainite structure of low-carbon and low-alloyed steel 15ХСНД for the production of connecting pipeline parts. Purpose of the article. To establish the laws of formation of a ferritic-bainitic structure in low-carbon low-alloy steels depending on the parameters of heat treatment. Determine the effect of heat treatment parameters on the properties of the connecting parts of pipelines made of these steels. Conclusion. The regularities of the influence of heat treatment parameters on the structure, mechanical properties and topography of fractures of impact samples of 15ХСНД steel with a ferrite-bainitic structure are established. Keywords: stamped-welded connecting parts of man pipelines; heat treatment; microstructure; bainite;mechanical properties; fractography

Experimental study of the mechanical and corrosion properties of ethyl silicate resin applied on low carbon steel

2021 ◽  
Vol 2 (108) ◽  
pp. 68-74
Author(s):  
M. Ali ◽  
J.H. Mohmmed ◽  
A.A. Zainulabdeen
Keyword(s):  
Heat Treatment ◽  
Carbon Steel ◽  
Open Circuit Potential ◽  
Low Carbon Steel ◽  
Open Circuit ◽  
Treatment Temperature ◽  
Ethyl Silicate ◽  
Low Carbon ◽  
Corrosion Properties ◽  
Mixture Ratio

Purpose: This work aimed at evaluating the properties of the ethyl silicate-based coating that can be applied on low carbon steel. Design/methodology/approach: Two mixture ratio types (2:1, and 3:2) of resin and hardener respectively were used to prepared two specimen models (A and B). Findings: It found that some mechanical properties (tensile, hardness, and impact strength) of ethyl silicate resin were evaluated according to standard criteria. Research limitations/implications: The effect of heat treatments at various temperatures (100, 150, and 200°C) and holding at different times (10, 20 & 30) min on hardness was investigated. Practical implications: Moreover, an open circuit potential corrosion test with a solution of 3.5% Sodium Chloride at room temperature and 60°C was used to determine the corrosion resistance of low carbon steel specimens coated with the two mixture types. Originality/value: The effects of mixture ratios (for resin and hardener) and heat treatment conditions on properties of ethyl silicate-based coating were studied. From obtained results, acceptable values of tensile, hardness, and toughness were recorded. Increasing heat treatment temperature and holding time leads to enhance hardness for both model types. An open circuit potential (OCP) tests show that there is an enhancement of protective properties of ethyl silicate coatings with mixture type B in comparison with type A was achieved. Generally, the results indicate that specimen model B has higher properties as compared with specimen model A.

Micro-Alloyed Steel for Forgings

2018 ◽  
Vol 941 ◽  
pp. 1603-1606
Author(s):  
Sabrina Mengaroni ◽  
Massimo Calderini ◽  
Giuseppe Napoli ◽  
Chiara Zitelli ◽  
Andrea di Schino
Keyword(s):  
Heat Treatment ◽  
Tensile Properties ◽  
Alloyed Steel ◽  
Precipitation Strengthening ◽  
Micro Alloyed Steel ◽  
Industrial Demand

To fulfill the industrial demand of forged steels with high tensile properties and microstructural requirements coupled with reduced cost, the possibility to increase the properties of C-Mn steels by means of precipitation strengthening as achieved by micro-alloying (and without the addition of expensive elements such as Mo and Cr) has been evaluated. In order to do that, the effect of V addition has been exploited by means of metallurgical modelling followed by a laboratory ingot manufacturing. Heat treatment has been designed aimed to achieve the desired target tensile properties. Results show that ASTM A694 F70 grade requirements can bel fulfilled by 0.15% V addition and a proper heat treatment in a ferrite-pearlite microstructure, representative of a forged component. Results are discussed in comparison to those of a similar steel without V addition.

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