Impact of the heating rate on the annealing behavior and resulting mechanical properties of UFG HSLA steel

Niehuesbernd, Jörn; Bruder, Enrico; Müller, Clemens

doi:10.1016/j.msea.2017.11.018

Cited by 5 publications

(3 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…While the plasticity of the HF-ERW joint with the frequency of 250 kHz is lower than that of the others. According to the engineering stress-strain curve as well as the ratio of yield strength to ultimate tensile strength in table 4 which is shown with Y.S/U.T.S coefficient, the corresponding value for HF-ERW joint with frequency of 200 kHz is higher than that of the two other frequencies followed by more ductility which itself indicates the material ability for plastic deformation before rupture or failure [22][23][24][25][26][27]. In the following, considering the surface which is below the curve in the linear part of stress-strain curve (elastic region) that follows Hooke's law, elasticity or the ability of the material to withstand shocks is almost equal, however the elasticity of the HF-ERW joint with 150 kHz frequency is slightly more than that of the other joints.…”

Section: Resultsmentioning

confidence: 99%

Archives of Metallurgy and Materials

Sabzi¹,

Kianpour-Barjoie²,

Hasab³

et al. 2018

View full text Add to dashboard Cite

This study investigates the effects of frequency, compression force and Vee angle parameters of High-Frequency Electric Resistance Welding (HF-ERW) process on mechanical properties of API X52 microalloy steel welding joint. Therefore, API X52 microalloy steel sheets having thickness of 8 mm was provided to manufacture pipes with the diameter of 16". with direct weld seams using the HF-ERW method. During the manufacturing process, frequency values of 150, 200 and 250 kHz, compression forces of 2, 4 and 6 mark and Vee angles of 3°, 5°, and 7° were adopted. After changing the welding parameters, from the welded pipes, tensile and Charpy impact test samples prepared to macroscopically evaluate the weld metal flow and examine the effects of these parameters on mechanical properties of the welded joints. According to the results, it was concluded that frequency of 150 kHz, the compression force of 4 mark and Vee angle of 5° yields best mechanical properties in the HF-ERW joint of API X52 microalloy steel.

show abstract

Section: Resultsmentioning

confidence: 99%

Archives of Metallurgy and Materials

Sabzi¹,

Kianpour-Barjoie²,

Hasab³

et al. 2018

View full text Add to dashboard Cite

show abstract

“…UFG Ni, Cu, and brass alloys do exhibit discontinuous growth, whereas high stacking fault energy materials such as Al alloys and ferrite steels often show a more continuous coarsening behavior, which can result in a broader but not necessarily bimodal grain size distribution after annealing . Whether continuous or discontinuous growth occurs can also depend on the heat treatment parameters as was recently shown for a ferrite steel, which exhibits a transition from continuous to discontinuous coarsening depending on the heating rate …”

Section: Microstructural Effectsmentioning

confidence: 92%

Formability of Ultrafine Grained Metals Produced by Severe Plastic Deformation–An Overview

Bruder

2018

Adv Eng Mater

Self Cite

View full text Add to dashboard Cite

Severe plastic deformation (SPD) techniques have attracted considerable attention due to their capability to refine the grain size of metals and alloys down to the ultrafine grained (UFG) regime. A characteristic feature of SPD processes is that they generate semi-finished parts such as rods or sheets, which require further shaping in order to become marketable products. One approach for the shaping of SPD processed materials is the use of metal forming processes, which can be a challenge with regard to the low work hardening rate and tendency to strain localizations of most UFG metals. This article summarizes the current state of knowledge on the formability and forming behavior of UFG metals under different loading scenarios, discussing both limitations and application potential. Furthermore, the interaction between microstructural aspects and the formability, such as the occurrence of strain localizations during and the role of heat treatments are also addressed. Given that the formability of UFG metals has received far less attention than other aspects so far, this work also aims at identifying apparent contradictions as well as scientific and technological questions that need to be addressed in future to expand the current knowledge of the field.

show abstract

“…To re-improve, these characteristics, the annealing process is generally carried out [15]. Various studies on the method of heat treatment through annealing show that the defects of metal can decrease [15,16].…”

Section: Introductionmentioning

confidence: 99%

Electrochemistry Study on the Relationship Between Grain Boundary State and Corrosion Behavior of Ultrafine Grained Iron Chromium Alloy

Prasetya

Rifai

As’ari

et al. 2020

jsmi

View full text Add to dashboard Cite

ELECTROCHEMISTRY STUDY ON THE RELATIONSHIP BETWEEN GRAIN BOUNDARY STATE AND CORROSION BEHAVIOR OF ULTRAFINE GRAINED IRON CHROMIUM ALLOY. Research on stainless steel corrosion resistance continues to grow today. This reality cannot be separated from the needs of stainless steels in various fields, one of which is bio-implant. In this research, the effect of grain size on the corrosion behavior of iron-chromium (Fe-Cr) alloy was investigated. Coarse grain Fe-Cr alloy was first processed with equal channel angular pressing (ECAP) for eight cycles to obtain ultrafine grain structure. The coarse and ultrafine grain samples then were then tested using XRD, SEM-EBSD, and the pitting corrosion properties tested using potentiodynamic polarization method in NaCl 1 M solution. The result of XRD dan SEM-EBSD shows that the initial sample is truly has a coarse grain structure, while ECAP produces an ultrafine grain structure. Corrosion test results showed that the ultrafine grain sample had better pitting corrosion resistance compared to the coarse grain sample. This behavior is related to the rate of passivation that depends on non-equilibrium grain boundaries, which can be easily observed in the ultrafine grain structure. Based on these results, it can be concluded that the ultrafine grain Fe-Cr alloy has a better corrosion resistance compared to the coarse grain.

show abstract

Impact of the heating rate on the annealing behavior and resulting mechanical properties of UFG HSLA steel

Cited by 5 publications

References 23 publications

Archives of Metallurgy and Materials

Archives of Metallurgy and Materials

Formability of Ultrafine Grained Metals Produced by Severe Plastic Deformation–An Overview

Electrochemistry Study on the Relationship Between Grain Boundary State and Corrosion Behavior of Ultrafine Grained Iron Chromium Alloy

Contact Info

Product

Resources

About