Mechanical and Galvano-chemistry Property Variation within Dissimilar Metal Weld between 1Cr18Ni9Ti and 1Cr13 Stainless Steel
| Autor: | Yongtao Zhao, Jun-Hui Dong, Liping Zhao, Yonglin Ma, Xiaobing Pei |
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| Rok vydání: | 2010 |
| Předmět: |
Austenite
Heat-affected zone Materials science Polymers and Plastics Mechanical Engineering Metallurgy Metals and Alloys Welding joint Welding Microstructure law.invention Corrosion Mechanics of Materials law Ultimate tensile strength Materials Chemistry Ceramics and Composites Composite material Base metal |
| Zdroj: | Journal of Materials Science & Technology. 26:477-480 |
| ISSN: | 1005-0302 |
| DOI: | 10.1016/s1005-0302(10)60076-x |
| Popis: | The purpose of this study is to discuss the microstructure and properties variation of the weld metal in the dissimilar stainless steels during the argon tungsten-arc welding process. Because of the existence of different materials and chemistry variation within welds, properties, such as tensile and fracture properties and so on, are expected to show spatial variation. In the study, microstructures were observed by optical and electron microscopy. Good appearance and uniform structure and typical dendrite structure were observed in welding joint. The micro-hardness tester and electronic universal stretcher were used to measure the mechanical properties of the weldments and base metals. The heat affected zone (HAZ) near 1Cr13 hardness is up to peak value of 1150 HV, the strength of weldments is nearly same as austenite stainless steel. In addition, through seawater immersion test, polarization curves and AC impedance spectroscopy of the weldments and base metals are obtained. It was found that corrosion resistance at welding joint lies between 1C13 and 1Cr18Ni9Ti. |
| Databáze: | OpenAIRE |
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