scholarly journals Impact of Warm Rolling Process Parameters on Crystallographic Textures, Microstructure and Mechanical Properties of Low-Carbon Boron-Bearing Steels

Metals ◽  
2018 ◽  
Vol 8 (11) ◽  
pp. 927 ◽  
Author(s):  
Mandana Zebarjadi Sar ◽  
Silvia Barella ◽  
Andrea Gruttadauria ◽  
Davide Mombelli ◽  
Carlo Mapelli
Keyword(s):  
Mechanical Properties ◽  
Microstructural Analysis ◽  
Low Carbon Steel ◽  
Rolling Process ◽  
Warm Rolling ◽  
Low Carbon ◽  
Different Temperatures ◽  
High Boron ◽  
Experimental Trials ◽  
Boron Steels

The effect of the warm rolling process on the microstructure and the mechanical properties of low-carbon high-boron steels are studied in this work. To investigate these effects, boron-bearing low-carbon steel, subjected to roll at three different temperatures, was studied symmetrically and asymmetrically. The results of the experimental trials achieved by mechanical and microstructural analysis revealed that the use of warm rolling can represent a favorable method to suppress strain aging completely, and to eliminate the fluting effect and yield point elongation. In addition, the tensile and elongation properties are modified with the formation of boron nitride precipitates and dislocations in different thermomechanical conditions.

Crystallographic Texture Control Helps Improve Pipeline Steel Resistance to Hydrogen-Induced Cracking

2010 ◽  
Author(s):  
V. Venegas ◽  
O. Herrera ◽  
F. Caleyo ◽  
J. M. Hallen ◽  
T. Baudin
Keyword(s):  
Grain Boundaries ◽  
Crystallographic Texture ◽  
Pipeline Steel ◽  
Low Carbon Steel ◽  
Rolling Process ◽  
Warm Rolling ◽  
American Petroleum Institute ◽  
Low Carbon ◽  
Steel Rolling ◽  
Hydrogen Induced Cracking

Low-carbon steel specimens, all within API (American Petroleum Institute) specifications, were produced following different thermomechanical paths. After austenization, the samples were rolled and recrystallized. The rolling process was carried out using different reduction-in-thickness degrees and finishing temperatures. The investigated steels showed similar microstructural features but differed considerably in their crystallographic textures and grain boundary distributions. After cathodic hydrogen charging, hydrogen-induced cracking (HIC) was detected in the hot-rolled recrystallized steels, whereas the cold and warm-rolled recrystallized steels proved resistant to this damage. Among the investigated specimens, the HIC-stricken show either the strongest {001}ND texture fiber, the smallest fraction of low-angle grain boundaries, or the weakest {111}ND (γ) texture fiber ({hkl}ND representing crystallographic orientations with {hkl} planes parallel to the steel rolling plane). In contrast, the HIC-resistant steels show the weakest {001}ND texture fiber, the largest fraction of low-angle grain boundaries, and the strongest γ fiber. These results support the hypothesis of this and previous works, that crystallographic texture control, through warm rolling schedules, helps improve pipeline steel resistance to hydrogen-induced cracking.

Effect of Cooling Condition after Warm Rolling on the Development of Microstructure and Texture in an ELC Steel

2005 ◽  
Vol 105 ◽  
pp. 259-264
Author(s):  
Arunansu Haldar ◽  
R.K. Ray ◽  
A.J. Khan
Keyword(s):  
Low Temperatures ◽  
Low Carbon Steel ◽  
Warm Rolling ◽  
The Other ◽  
Texture Development ◽  
Low Carbon ◽  
Deformation Bands ◽  
Cooling Conditions ◽  
Different Temperatures ◽  
Rolling Temperatures

The microstructure and texture development in an extra low carbon steel during warm rolling (~ 80%) in a single pass at four different temperatures and at two different cooling conditions were studied. The g fibre texture develops at lower warm rolling temperatures (500 °C and 600 °C) and a very weak a fibre develops at higher rolling temperatures (700 °C and 800 °C). Very little or no difference in microstructure and texture development was observed under two cooling conditions at four rolling temperatures. No significant effect of cooling rates could be found at higher temperatures of rolling due to very fast static recrystallisation after rolling which also caused the weakening of texture. On the other hand deformation bands produced at low temperatures rolling helped in forming strong g fibre textures.

THE EFFECTS OF ACCUMULATIVE ROLL BONDING PROCESS ON MICROSTRUCTURE AND MECHANICAL PROPERTIES OF IF STEEL

2008 ◽  
Vol 22 (18n19) ◽  
pp. 2866-2873 ◽  
Author(s):  
SAEED TAMIMI ◽  
MOSTAFA KETABCHI ◽  
NADER PARVIN
Keyword(s):  
Mechanical Properties ◽  
Grain Size ◽  
Accumulative Roll Bonding ◽  
Low Carbon Steel ◽  
Rolling Process ◽  
Low Carbon ◽  
Roll Bonding ◽  
Rolling Pass ◽  
Steel Strips ◽  
Wire Brushing

This work aims to investigate whether accumulative roll bonding (ARB) is an effective grain refinement technique for ultra-low-carbon steel strips containing 0.004% C. For this purpose, a number of ARB processes were performed at 500 °C, with 50% reduction in area of each rolling pass. It was found that both the ultimate grain size achieved, as well as the degree of bonding, depend on number of rolling pass and reduction of area as a whole. The mean grain size was obtained using AFM was about 130nm. The mechanical properties after rolling and cooling were obtained. Also, the fracture surfaces were studied by Scanning Electron Microscopy (SEM). It was concluded that metal's tensile strengths increased by 334% while the ductility dropped from a prerolled value of 50.5% to 2.6%. Effect of wire brushing on samples observed too. It increased on the wire brushed sheet for 7 HV. The rolling process was stopped when cracking of the edges became pronounced.

Effects of thread rolling processing parameters on mechanical properties and microstructures of high-strength bolts

2020 ◽  
Vol 62 (10) ◽  
pp. 1017-1024
Author(s):  
Serkan Aktas ◽  
Yasin Kisioglu
Keyword(s):  
Mechanical Properties ◽  
Low Carbon Steel ◽  
High Strength ◽  
Rolling Process ◽  
Processing Parameters ◽  
Industrial Applications ◽  
Low Carbon ◽  
Forming Process ◽  
Cold Forming ◽  
Thread Rolling

Abstract Bolt production with a grade of 10.9 class quality made from AISI4140 material with a low thread rolling index is usually implemented in accordance with the thread rolling method (cold forming) in industrial applications. In this method, the effects of die revolutions and multiple passes are unknown in the thread forming process as the devices are usually operated with respect to geometrical dimensions but not the mechanical properties and microstructures of the material. In the literature there are few studies on microstructures of low-carbon steel having a higher thread rolling index in bolt production. This study experimentally examined the effects of the processing parameters on the mechanical properties and microstructures. Parameters such as forming speed and single or multi-pass influences were considered in the production of M12 × 1.75 and M20 × 2.5 fasteners widely used in industrial applications. The experiments identified the behavior of the mechanical properties, microstructures and micro-hardness of the AISI4140 material at two forming speeds (rpm) and three passes in the thread rolling process. Thus, significantly sensible outcomes as a function of processing parameters were obtained considering the thread strength viewpoints.

Grain Refinement through Warm Rolling of Wedge-Shaped Low Carbon Steel

2011 ◽  
Vol 383-390 ◽  
pp. 5869-5873 ◽  
Author(s):  
Rini Riastuti ◽  
R. Bastian M. ◽  
Dedi Priadi ◽  
Eddy S. Siradj
Keyword(s):  
Mechanical Properties ◽  
Carbon Steel ◽  
Grain Refinement ◽  
Low Carbon Steel ◽  
Warm Rolling ◽  
Low Carbon ◽  
Warm Temperature ◽  
Working Temperature ◽  
Warm Working ◽  
Fine Grain

Study of grain refinement has developed to improving the mechanical properties of low carbon steel. Wedge shaped slab of low carbon steel were deformed through warm rolling methods of 500, 550, and 600oC to produce a finer ferrite grains. The thickness reduction of deformation is 80, 75, 67 and 50% .Dynamic recrystallizations were confirmed at warm working temperature in this study. Grains size which obtained through this process could improve the hardness and its mechanical properties and also its performance in corrosive environment. The smallest grain size was obtain from 80% deformation is 5.2 µm and the tensile strength is 817.65 MPa. Its gives the evidence that warm rolling can use to produce the fine grain at warm temperature of 600oC.

scholarly journals Effects of hot and warm rolling on microstructure, texture and properties of low carbon steel

2011 ◽  
Vol 64 (1) ◽  
pp. 57-62 ◽  
Author(s):  
Roberto Gerardo Bruna
Keyword(s):  
Mechanical Properties ◽  
Thermomechanical Processing ◽  
Low Carbon Steel ◽  
Warm Rolling ◽  
Carbon Steels ◽  
Low Carbon ◽  
Coiling Temperature ◽  
Microstructure And Mechanical Properties ◽  
Cold Rolling And Annealing ◽  
Hot And Cold Rolling

It is well-known that variations in the thermomechanical processing can have a profound effect on the microstructure and mechanical properties of Low Carbon steels. Numerous studies have been published on the effect of composition, slab reheating temperature (SRT), hot rolling finishing temperature (FRT), coiling temperature after rolling (CT), amount of deformation during hot and cold rolling, and annealing temperature on the mechanical properties of LC steels. There are, however, some disagreements in the results presented in the literature. In this work the FRT and CT effects on the microstructure, recrystallization behavior and texture of LC steels rolled under hot and warm-rolling industrial conditions were investigated. The results in terms of the microstructure, crystallographic texture and properties are shown and discussed. In addition, this study will present the possible mechanisms responsible for the microstructure and mechanical properties observed.

Interface Microstructure and Properties of 304 Austenite Stainless Steel/Low Carbon Steel Clad Plate by Casting and Hot Rolling Process

2014 ◽  
Vol 852 ◽  
pp. 178-182
Author(s):  
Shuo Li ◽  
Di Tang ◽  
Hui Bin Wu ◽  
Ji Guang Xiong
Keyword(s):  
Mechanical Properties ◽  
Stainless Steel ◽  
Carbon Steel ◽  
Hot Rolling ◽  
Low Carbon Steel ◽  
Rolling Process ◽  
Low Carbon ◽  
Interface Shear ◽  
Austenite Stainless Steel ◽  
Hot Rolling Process

The 304 austenite stainless steel and low carbon steel clad plate was fabricated by casting and hot rolling process. The mechanical properties and interface shear strength of clad plates with different thickness after rolling were investigated in detail. The microstructure characteristics of the clad interface were observed by SEM (Scanning Electron Microscope). The phases and chemical composition were analyzed by XRD (X-ray diffraction) and EDS (energy dispersive spectroscopy). Based on the results, the mechanical properties and interface shear strengths meet the requirements of national standards. No visible cracks were observed in the clad interface after bending test. Cr3C2precipitates, Fe3O4oxides and Fe-Cr intermetallic compound were distributed around the interface of clad plate after casting, but a good metallurgical bonding was achieved after hot-rolling.

Sign in / Sign up

Export Citation Format

Share Document