Multiresponse Optimization of Mechanical Properties and Formability of Hot Rolled Microalloyed Steels

Khaki, Daavood Mirahmadi; Ayaz, Mohsen; Arab, Nasrollah Bani Mostafa; Noroozi, Ali

doi:10.1007/s11665-013-0830-6

Cited by 6 publications

(6 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…If the target (T) for the response (y) is a maximum value, then the individual desirability function (d) is the one as calculated from the following equationwhere L and r show the lower limit of the response and the weight factor respectively. 32 When the weight r = 1, the desirability function is linear. Selecting r > 1 places more importance on being close to the target value, and selecting 0 < r <1 makes this less important.…”

Section: Resultsmentioning

confidence: 99%

“…where L and r show the lower limit of the response and the weight factor respectively. 32 When the weight r = 1, the desirability function is linear. Selecting r > 1 places more importance on being close to the target value, and selecting 0 < r <1 makes this less important.…”

Section: Analysis Of Desirability Functionmentioning

confidence: 99%

“…where m denotes the number of responses. 32 The desirability function approach applied in the present research joins two responses (i.e. tensile strength and elongation) in one composite desirability function that may be written in this case as…”

Section: Analysis Of Desirability Functionmentioning

confidence: 99%

See 2 more Smart Citations

Studying the influence of friction stir welding parameters on the mechanical properties of PP/EPDM/Clay nanocomposites by response surface methodology combined with desirability function approach

Rezaei

Arab

Ayaz³

2022

Journal of Thermoplastic Composite Materials

Self Cite

View full text Add to dashboard Cite

The main objective of the present study is to investigate the influence of friction stir welding (FSW) parameters using a novel tool on the mechanical properties of polypropylene-ethylene-propylene diene monomer/clay (PP/EPDM/Clay) nanocomposite. The response surface method of design of experiments in combination with the desirability function approach is applied to quantify the effects of clay content, tool rotational speed, welding speed, and tool shoulder temperature on tensile strength and elongation of welded joints. It was observed that the tool rotational speed had the maximum effect on the tensile strength, while the greatest influence on the elongation was due to the tool shoulder temperature. The addition of clay nanoparticles up to 6 wt% into the PP matrix reduced the tensile strength and elongation of the weld by about 38% and 20%, respectively. Moreover, an improvement of about 45% was observed in the tensile strength when the rotational speed increased from 800 to 1600 r/min, while the tensile strength deteriorated by about 29% when the linear speed increased from 10 to 20 mm/s. A rise in shoulder temperature from 50 to 100°C was also accompanied by an enhancement in the tensile strength and elongation by 20 and 50%, respectively. Nevertheless, the desired operating conditions were found to be 0.85 wt% for clay, 1390 r/min for the tool rotational speed, 10 mm/min for the welding speed, and 100°C for the tool shoulder temperature. The fracture morphologies obtained by scanning electron microscopy (SEM) were in good agreement with corresponding tensile strength and elongation results.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Analysis Of Desirability Functionmentioning

confidence: 99%

See 1 more Smart Citation

Studying the influence of friction stir welding parameters on the mechanical properties of PP/EPDM/Clay nanocomposites by response surface methodology combined with desirability function approach

Rezaei

Arab

Ayaz³

2022

Journal of Thermoplastic Composite Materials

Self Cite

View full text Add to dashboard Cite

show abstract

“…Varyans analizi (ANOVA) malzemelerin mekanik özelliklerinin ve şekil verilebilirliğinin üretim parametrelerine bağlı olarak tahmini ve değerlerin optimizasyonunda da kullanılmaktadır. Khaki ve diğerleri yaptıkları çalışmada Nb mikroalaşımlı çelik sacların mekanik ve şekillendirilebilirlik özelliklerini etkileyen sıcak haddeleme parametrelerini analiz etmek için 2 3 faktöriyel tasarımı (2 seviyedeki 3 değişken) kullanmış ve yeterli doğrulukta regresyon modelleri elde etmişlerdir [10]. Diğer bir çalışmada ise yine sıcak haddeleme parametrelerinin Nb mikroalaşımlı çelik sacların mekanik özelliklerine etkisini belirlemede ve ampirik formüllerini oluşturmada yanıt yüzeyi metodunu kullanmışlardır [11].…”

Section: Introductionunclassified

St 22 Çeliğinin Derin Çekilebilirliğine Etki Eden Parametrelerin ANOVA ile Analizi

Kanca

Günen

2018

SDÜ Fen Bil Enst Der

View full text Add to dashboard Cite

Bu çalışmada soğuk haddelenmiş ve ardından galvanizlenmiş St 22 çeliğinin kimyasal bileşimi, soğuk haddeleme öncesindeki sac kalınlığı ve mekanik özellikleri (akma ve çekme gerilmesi, % uzama) ile soğuk haddeleme ezme oranının derin çekilebilirliğe etkileri varyans analizi (ANOVA) kullanılarak incelenmiştir. Çalışmada düşük karbonlu St 22 çeliği değişik ezme oranlarında soğuk haddelenmiş ardından galvanizleme işlemine tabi tutulmuştur. Malzemenin derin çekilebilirliğinin tespiti için Erichsen çökertme deney sonuçları kullanılmıştır. Yapılan çalışmalar sonucunda derin çekilebilirliğe etkisi en yüksek parametrenin ezme oranı olduğu tespit edilmiştir. Elde edilen matematik model sonuçları ile deney verilerinin iyi bir şekilde örtüştüğü görülmüştür. Bu çalışma sonucu elde edilen ampirik formül kullanılarak derin çekme işlemlerinde kullanılan sacların daha ekonomik ve pratik bir şekilde şekillendirilebilecekleri öngörülmektedir.

show abstract

“…This combination of properties have led to their varied applications in the automotive industry, in manufacturing of large diameter pipes for gas and oil transportation in the areas of low temperature, and in fabrication of plates for naval ship's construction 1 . It is also popular to use HSLA steels replacing the conventional low strength counterpart for reducing thicknesses and permitting the reduction of weight in weight-saving applications 2 .…”

Section: Introductionmentioning

confidence: 99%

The Analysis of the Microstructure and Mechanical Properties of Low Carbon Microalloyed Steels after Ultra Fast Cooling

Tian

Wang

et al. 2017

Mat. Res.

View full text Add to dashboard Cite

In this paper, two low carbon microalloyed steels, named as steel A and steel B, were fabricated by ultra fast cooling (UFC). In both steels, the microstructures containing quasi polygonal ferrite (QF), acicular ferrite (AF) and granular bainite (GB) can be obtained by UFC process. The amount of AF in steel B is more than that in steel A. The size and distribution of precipitates (Nb/Ti carbonitrides) in steel B are finer and more dispersed than those of in steel A due to relatively low finish cooling temperature. The mechanical properties of both steels are effectively enhanced by UFC process. UFC process produces low-temperature transformation microstructures containing a significant amount of AF. The mechanical properties of steel B were more satisfactory than those of steel A due to the finer average grain size, the greater amount of the volume fractions and smaller size of secondary phases.

show abstract

Multiresponse Optimization of Mechanical Properties and Formability of Hot Rolled Microalloyed Steels

Cited by 6 publications

References 32 publications

Studying the influence of friction stir welding parameters on the mechanical properties of PP/EPDM/Clay nanocomposites by response surface methodology combined with desirability function approach

Studying the influence of friction stir welding parameters on the mechanical properties of PP/EPDM/Clay nanocomposites by response surface methodology combined with desirability function approach

St 22 Çeliğinin Derin Çekilebilirliğine Etki Eden Parametrelerin ANOVA ile Analizi

The Analysis of the Microstructure and Mechanical Properties of Low Carbon Microalloyed Steels after Ultra Fast Cooling

Contact Info

Product

Resources

About