Effect of cooling rates on the weld heat affected zone coarse grain microstructure

Celin, Roman; Burja, Jaka

doi:10.30544/342

Cited by 25 publications

(16 citation statements)

References 4 publications

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“…The weldability of mixed joints has not been yet sufficiently investigated and there is deficient literature information on it, especially regarding its use in the construction of transport means. Non-alloy steels might be welded applying various processes, with the best results obtained using the low oxygen methods [9,10]. During the welding of non-alloy steels, micro-jet cooling is employed with an increasing frequency in order to control the structure and to enhance the plastic properties of the joint [7].…”

Section: Research Materials and Welding Parametersmentioning

confidence: 99%

Welding of Mobile Platform Elements Made of Ahss Steel and a Non-Alloy Steel

Szczucka-Lasota¹,

Węgrzyn²,

Łazarz³

et al. 2020

SJSUT.ST

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In the construction of mobile platforms, there is an increasing necessity to weld steels from the AHSS group (AHSS-Advanced High-Strength Steel) with low-alloy steels. This article verifies the possibility of obtaining accurate mixed welded joints from different grades of AHSS steel with S355J2 steel. The structure, as well as mechanical properties of the obtained welded joints, were thoroughly analysed.

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Section: Research Materials and Welding Parametersmentioning

confidence: 99%

Welding of Mobile Platform Elements Made of Ahss Steel and a Non-Alloy Steel

Szczucka-Lasota¹,

Węgrzyn²,

Łazarz³

et al. 2020

SJSUT.ST

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show abstract

“…Manufacturers of mobile platforms mounted on vehicles are constantly looking for new solutions that enable the reduction of the extra weight of these additional elements and elevation of the working range of these platforms. In order to increase the properties of platform structures, another goal is to reinforce their tensile strength [3][4][5][6][7][8].…”

Section: Fig 1 Requirements Imposed Upon Mobile Platforms [3]mentioning

confidence: 99%

Welding Mobile Platforms Elements Made of Ahss Steel in View of New Requirements in Civil Engineering and Transport

Węgrzyn

Jurek²,

Wszołek³

et al. 2019

SJSUT.ST

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The developing automotive industry has prompted an increase in the demand for new welding technologies in civil engineering and transport that reduce the mass of mobile platforms mounted on vehicles and increase their operational range at the same time. The AHSS steels are the materials most commonly adapted for the production of motor vehicles due to their high tensile strength. Nonetheless, the joints created with their use are less strong from the native material. This article examined whether the application of micro-jet cooling would alter the mechanical properties of the welds. Based on the performed tests, joints with better quality that passed positively in the hardness and tensile strength evaluations were obtained. The presented research proves that the use of additional elements in the welding process significantly affects the quality of the obtained welds and brings satisfactory results with a greater repeatability than before.

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“…Sementara HAZ sendiri terdiri dari coarse grain HAZ -CGHAZ, fine grain HAZ -FGHAZ dan intercritical HAZ -ICHAZ. CGHAZ menunjukkan sedikit peningkatan kekerasan dan mode campuran/ patahan microvoid perpaduan, tetapi ketangguhannya sebanding dengan logam dasar [3] dan shown in Figure 1 [4]. CGHAZ menunjukkan kekerasan sedikit naik dan modus campuran aduk/modus patahan campuran microvoid, tetapi ketangguhan sebanding dengan logam dasar [3].…”

Section: Pendahuluanunclassified

Modus Pelunakan dan Pengerasan HAZ pada Manual GMAW Welded Joint

Yurianto

Pratikto

Soenoko

et al. 2019

Rot.

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Las manual gas metal arc welding banyak digunakan dalam industri manufaktur konvensional. Akhir proses pengelasan menghasilkan produk las yang diinginkan. Pada baja dengan tebal dan jenis yang sama, dan metode pengelasan yang sama tetapi operator berbeda menghasilkan kekuatan las yang berbeda. Keseragaman produk las antara satu dan operator lain dapat diperoleh dengan welding procedure specification. Namun prosedur ini tidak menjamin kekuatan sambungan sama meskipun operator berbeda. Kekuatan daerah terpengaruh panas tergantung pada parameter las yang digunakan seperti diameter elektroda; arus listrik; tegangan listrik, kecepatan pengelasan; logam tebal dan panas masuk. Selain itu, perlu dipertimbangkan unsur kimia baja yang dilas. Parameter pengelasan akan mempengaruhi dimensi daerah terpengaruh panas. Semakin lebar daerah terpengaruh panas akan menurunkan kekuatan sambungan las. Pernyataan masalah dalam penelitian ini adalah "bagaimana menurunkan dimensi daerah terpengaruh panas yang dipengaruhi oleh proses pembekuan logam las." State of the art dari penelitian ini adalah analisis pelunakan daerah terpengaruh panas dengan melibatkan pembekuan logam las. Tujuan dari penelitian ini adalah untuk mencari penyebab terjadinya pelunakan dalam daerah terpengaruh panas sambungan las gas metal arc welding manual. Hasil penelitian adalah kekerasan standard dan heat treated welded joint. Parameter perlakuan panas untuk mendapatkan kekerasan HAZ tertinggi.

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Effect of cooling rates on the weld heat affected zone coarse grain microstructure

Cited by 25 publications

References 4 publications

Welding of Mobile Platform Elements Made of Ahss Steel and a Non-Alloy Steel

Welding of Mobile Platform Elements Made of Ahss Steel and a Non-Alloy Steel

Welding Mobile Platforms Elements Made of Ahss Steel in View of New Requirements in Civil Engineering and Transport

Modus Pelunakan dan Pengerasan HAZ pada Manual GMAW Welded Joint

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