The microstructures, mechanical properties, and temperature distributions in nodular cast iron friction-welded joint

Winiczenko, Radosław; Kaczorowski, M.; Skibicki, Andrzej

doi:10.1007/s40430-018-1261-y

Cited by 11 publications

(16 citation statements)

References 33 publications

(45 reference statements)

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“…Tabel 1. Komposisi kimia material dasar (base metal) dan elektroda lasan yang digunakan (Suharto, Risanti, & Sekartedjo, 2019 Perhitungan CE cast iron menggunakan persamaan (Winiczenko, Kaczorowski, & Skibicki, 2018):…”

Section: Metode Penelitian 21 Materials Grey Cast Ironunclassified

Analisis Matematis Pengelasan Grey Cast Iron Menggunakan Proses Gtaw Dengan Dan Tanpa Preheat

Risanti¹

2021

JTech

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Pemberian pemanasan awal pada proses pengelasan memberikan efek pengurangan tegangan, distorsi, retakan dan kekerasan pada daerah Heat Affected Zone (HAZ) dengan memperlambat laju pendinginan. Distribusi temperatur saat pengelasan didekati dengan menggunakan persamaan analitik Rosenthal pada logam grey cast iron. Grey cast iron termasuk sulit untuk dilas dan memerlukan perlakuan khusus. Pada penelitian ini, perhitungan distribusi temperatur dan laju pendinginan dibandingkan dengan struktur mikro dan kekerasan untuk grey cast iron yang dilas dengan menggunakan Gas Tungsten Arc Welding (GTAW). Persamaan Rosenthal dengan solusi Bessel hanya cocok untuk distribusi temperatur pada daerah lelehan, sedangkan solusi quasi steady state dapat digunakan untuk prediksi distribusi temperatur arah lateral dan transversal pada logam lasan. Preheating pada suhu 315 berpengaruh pada lebar HAZ yang dihasilkan menurut persamaan eksponensial terhadap travel speed, memperlambat laju pendinginan dan menurunkan kekerasan karena berkurangnya carbon equivalent (CE). Struktur mikro HAZ pada grey cast iron yang diberi preheating menunjukkan dominasi martensit nikel dan eutektik ledeburit, sedangkan tanpa preheating menghasilkan struktur mikro didominasi oleh eutektik ledeburit dan besi karbida dalam white iron.

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Section: Metode Penelitian 21 Materials Grey Cast Ironunclassified

Analisis Matematis Pengelasan Grey Cast Iron Menggunakan Proses Gtaw Dengan Dan Tanpa Preheat

Risanti¹

2021

JTech

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“…Under the 200X magni cation, microstructures show very good bonding between the base metals. The weld zone of joints consists of a WI, TMAZ [20], and HAZ. The widths of these zones were measured and the graph was plotted with their values as shown in gure 10.…”

Section: Optical Microstructures and Width Measurement Of Weld Zonesmentioning

confidence: 99%

Effect of faying surfaces and characterization of aluminium AA6063–steel AISI304L dissimilar joints fabricated by friction welding with hemispherical bowl and threaded faying surfaces

Murugan

Sathiya

Haq

2021

Int J Adv Manuf Technol

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This work describes the effect of newly introduced faying surfaces on the microstructure and the mechanical properties of dissimilar weld joints of AA6063 and AISI304L alloys that fabricated through the rotary friction welding process (RFW). The experiments were done as six different experimental methods ('A' to 'F') at 1300 rpm rotation, 18 MPa friction pressure (FP), 24 MPa upset pressure (UP) and 5 sec friction time (FT) with the faying surfaces of hemispherical bowl and thread of 1 mm pitch on the weld specimens. The fabricated joints and the weld zones were characterized by macro and micro-study, Energy Dispersive X-ray Spectroscopy (EDS) spectrums, tensile properties, Vickers microhardness, impact toughness and fractography. The results showed that these faying surface modi cations strengthen the bonding between the weld specimens and in uences the performance of the joints. The hemispherical bowl showed better results than the threaded surfaces. Axial shortenings were within the acceptable limit in the range of 20-27 mm. Macro and microstructural studies showed the defect-free weld joints and the strong bonding between AA6063 and AISI304L alloys. The hemispherical faying surface on AISI304L alloy formed a U-shaped weld interface (WI) in the dissimilar joints. EDS proved the formation of the Fe-Al intermetallic and the element 'O' at weld zone. The joint e ciency for all the methods was around ≥ 100%. Maximum tensile strength was recorded as 238 MPa for method 'F'. The threaded surface showed good hardness property nearby WI and method 'A' yielded maximum impact toughness for the joint.

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“…As a result of clamping, a flash is formed. After the period of the bonding, there is a period of continuous cooling in the air [22]. Time-temperature profiles on the welding materials are shown in Fig.…”

Section: Time-temperature Distribution During Heating Processmentioning

confidence: 99%

“…After the friction stage, the forging stage began and the metal cooled down gradually. During the cooling phase, heat was conducted away from the weld interface and lost to the surroundings through the ends of weld specimens [22,24]. At 14s, temperature started gradually dropping to 130 0 C after 60s, while at the location of x=20 mm from the interface, the peak heating temperature was 250 0 C (Fig.…”

Section: Time-temperature Distribution During Cooling Processmentioning

confidence: 99%

“…More publications based on analytical [19,20] and numerical solutions [21], such as the finite difference method and finite element method, are presented. The estimation of temperature distribution in the friction welding of ductile iron with mild steel bars was also achieved [22]. The relationship between mechanical and heat energy was carried out in a paper [23].…”

Section: Introductionmentioning

confidence: 99%

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A genetic algorithm modelling of temperature distributions in the AZ31B magnesium alloys with 7075 aluminium alloy friction welded joints

et al. 2019

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This paper presents a genetic algorithm modelling of temperature distribution during heating and cooling of AZ31B magnesium alloys with 7075 aluminium alloy friction welded joints. The temperature distributions estimated in the joints using K-type thermocouples with the accuracy of ± 0.1°C. The thermocouples were installed in 1.2 mm holes at the periphery joint -5, 10, and 15 mm from the weld interface. Temperature reading was performed with a digital thermometer with the requisition frequency of 1000Hz during friction welding. Maximum temperature measurements in the half-radius of the analysed joints were equal to 305°C and 324°C, for the AZ31B magnesium alloy and 7075 aluminium alloy specimens, respectively. Both temperature and increasing temperature gradient at the axial specimens were higher than those at the half-radius and periphery of the joints. The empirical models for heating T=a/b+exp(ct) and cooling phases T=a-bt c were formulated by the authors of this study. These models used to describe the temperature curves of welding process. The goodness of fit of tested mathematical models to the experimental data was evaluated with the coefficient of determination R 2 . A nonlinear regression analysis was conducted to fit the models by genetic algorithm (GA) using computer program MATLAB.

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The microstructures, mechanical properties, and temperature distributions in nodular cast iron friction-welded joint

Cited by 11 publications

References 33 publications

Analisis Matematis Pengelasan Grey Cast Iron Menggunakan Proses Gtaw Dengan Dan Tanpa Preheat

Analisis Matematis Pengelasan Grey Cast Iron Menggunakan Proses Gtaw Dengan Dan Tanpa Preheat

Effect of faying surfaces and characterization of aluminium AA6063–steel AISI304L dissimilar joints fabricated by friction welding with hemispherical bowl and threaded faying surfaces

A genetic algorithm modelling of temperature distributions in the AZ31B magnesium alloys with 7075 aluminium alloy friction welded joints

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