Microstructure, thermal, and mechanical properties of friction stir welded 6061 aluminum alloy with 10% SiCp reinforcement

Dawood, Hasan I.; Alshemary, Kassim Kadhim Hameed; Mohammad, Abbas Khalaf; Sabeeh, Nawras Shareef

doi:10.21608/ejchem.2021.110858.5053

Cited by 7 publications

(2 citation statements)

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“…One of the quality parameters of silk fibers is their mechanical properties, which can be measured using a universal testing machine (UTM), including tensile strength, strain, stress, and elongation [11]. Mechanical properties play a crucial role in the functionality and durability of the material in various applications [15]. The mechanical properties of silk are determined by its hierarchical structure, including factors such as the level of crystallinity, dimensions, and arrangement of crystallites, as well as the molecular-level conformation and orientation of polypeptide chains [16].…”

Section: Introductionmentioning

confidence: 99%

Physical Characterization of Indonesian Eri Silk Fiber Derived from Novel Strains of Samia cynthia ricini

Maldia,

Darmawan,

Endrawati

et al. 2023

Egypt. J. Chem.

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Eri silk fibers are produced by the silkworm Samia cynthia ricini, which has been extensively cultivated in several tropical countries due to its adaptability to elevated temperatures and humidity, as well as the ample availability of its food sources. Currently, we have developed six new strains of S. ricini with extraordinary cocoon productivity and the ability to survive in marginal/extreme areas (high temperature and low humidity), namely Joglo, Jopati, Pasopati, Prasojo, Progo, and Tawang strains, respectively. This research analyzes the physical characterization of these Eri silk fibers, including the thermal characteristics, crystallinity structure, morphology, and functional groups of the silk fibers. The surface morphology of the degummed Eri silk fibers reveals the presence of separated fiber filaments with a smooth surface, ranging in diameter from 14 -33 µm. The tensile strength and elongation of the silk fibers from the new strains do not show a significant difference (P > 0.05 %), around 350 -497 MPa and 15 -26 %, respectively. In addition, the Fourier transform infrared spectrometer was also utilized to investigate the structural differences of Eri silk fibers. The results show absorption bands at 1623 cm -1 , 1513 cm -1 , 1219 cm -1 , and 703 cm -1 indicating vibration of C=O (Amide I), N-H (Amide II), and C-N (Amide III) groups indicate the presence of β-sheet structures in the silk fibers. X-ray diffractograms of Eri silk fibers show peaks at 16.54° and 20.40° that correspond to the β-sheet crystalline structure. The new strain fibers have no significant structural disparities compared to the general S. ricini silk fibers. The thermal characteristics of the Eri silk fibers from the new strains are similar, with water removal occurring at temperatures around 100 to 125 °C and degradation temperatures around 369 -373 °C. However, the Pasopati strain exhibits the highest heat capacity increment (ΔCp), 1.266 J g -1 °C-1 . Based on the comparative results, Eri silk fiber from novel strains of S. ricini reported can be utilized more extensively in the textile industry and biomaterial applications.

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Section: Introductionmentioning

confidence: 99%

Physical Characterization of Indonesian Eri Silk Fiber Derived from Novel Strains of Samia cynthia ricini

Maldia,

Darmawan,

Endrawati

et al. 2023

Egypt. J. Chem.

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“…Due to FSW's apparent low processing temperature, several welding imperfections such as deformation, solidification cracking, blowholes, spatters, and porosity can be reduced as an advantage to increase weld quality and joint quality [7,8]. In other words, the FSW process is an efficient method of welding for combining a wide range of metals and alloys that are similar and dissimilar in diverse fields of application [9,10]. The FSW process can also join aluminium composites, magnesium, fibre-reinforced polymers, and steels [11] .…”

Section: Introductionmentioning

confidence: 99%

Influence of tool pin profile on the mechanical strength and surface roughness of AA6061-T6 overlap joint friction stir welding

M.H. Osman,

Norfauzi Tamin

2023

JMES

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This study presents the tensile strength and surface roughness resulting from friction stir welding (FSW) on the lap joint method using AA 6061 –T6. FSW is conducted by comparing three different tool pin shapes: hexagon, thread, and square. Overlap welding using the FSW method is challenging if machine parameters, such as spindle speed and feed rate, are incompatible. The experiment was conducted using a conventional milling machine with a spindle speed of 1400 -1750 rpm and a feed rate of 20 – 30 mm/min. The results show that a spindle speed of 1750 rpm and a feed rate of 30 mm/min using a square tool pin results in 83.5088 MPa ultimate tensile strength and 0.85 µm surface roughness (Ra), which is much better than hexagon and thread type tool pins. In addition, the overall results on all three tool pin shapes show that higher processing parameters increase tensile strength and surface roughness. This study revealed the effect of parameters on AA6061 –T6 and the resulting implications of mechanical strength and surface roughness.

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Electrochemical and Morphology of Corrosion Inhibition of C-Steel in 2 M HCl

et al. 2022

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Microstructure, thermal, and mechanical properties of friction stir welded 6061 aluminum alloy with 10% SiCp reinforcement

Cited by 7 publications

References 0 publications

Physical Characterization of Indonesian Eri Silk Fiber Derived from Novel Strains of Samia cynthia ricini

Physical Characterization of Indonesian Eri Silk Fiber Derived from Novel Strains of Samia cynthia ricini

Influence of tool pin profile on the mechanical strength and surface roughness of AA6061-T6 overlap joint friction stir welding

Electrochemical and Morphology of Corrosion Inhibition of C-Steel in 2 M HCl

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