2021
DOI: 10.3390/met11010120
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Abstract: The microstructure, texture, and mechanical properties of the asymmetric welded joint in variable polarity plasma arc (VPPA) welding were studied and discussed in this paper. The asymmetric welded joint was obtained through horizontal welding, where the effect of gravity caused asymmetric material flow. The results showed that the grain size and low angle grain boundary (LAGB) at both sides of the obtained welded joint were asymmetric; the grain size differed by a factor of 1.3. The average grain size of the B… Show more

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Cited by 5 publications
(6 citation statements)
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“…Tensile tests were carried out at room temperature using a universal testing machine INSTRON-5569 under standard NoGBT228–2002 of P.R. China [ 2 ]. The size of the dog-bone specimen used to measure the tensile strength is shown in Figure 15 .…”
Section: Resultsmentioning
confidence: 99%
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“…Tensile tests were carried out at room temperature using a universal testing machine INSTRON-5569 under standard NoGBT228–2002 of P.R. China [ 2 ]. The size of the dog-bone specimen used to measure the tensile strength is shown in Figure 15 .…”
Section: Resultsmentioning
confidence: 99%
“…Porosity is easily formed in the solidification process of non-vertical up welding, this kind of pores are mainly hydrogen pores, the key reason for the formation of hydrogen pores is the difference in the solubility of hydrogen in the solid and liquid metal [ 13 ]. Previous studies have proposed the idea of an asymmetric heat source for solving asymmetric flow and reduced porosity, which provides a theoretical basis for improving variable position welding without changing the welding parameters [ 2 , 13 , 17 ]. The weld formation during variable position welding is the premise of practical applications, and elimination of the welding defects caused by asymmetric flow is the goal.…”
Section: Resultsmentioning
confidence: 99%
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