The Effect of Cooling Condition on Mechanical and Corrosion Properties for Inconel 52M Cladded on Stainless Steel 316L
| Autor: | Yu-hsien Chang, 張育賢 |
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| Rok vydání: | 2010 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 98 This study is to investigate the influence of cooling condition Inconel 52M for cladding SUS 316L on mechanical and corrosion properties by Gas Tungsten Arc Welding. It could be observed that the microstructure of the region between base and filler metal and the properties of mechanical and corrosion which can serve as a reference for further welding for nuclear power plant in the future. The results show that welding with water cooling backing has lower dilution ratio of matrix than without water cooling backing. It could be observed that the grain size of weld zone with water cooling backing was smaller than that without water cooling backing by using microscope. This phenomenon promoted the hardness of weld zone. In tensile test, the crack of weldment with water backing appeared in matrix. On the other hand, the crack of weldment without water cooling backing was observed in the weld zone. These phenomena implied that the weldment with water cooling backing has higher tensile strength than that without water cooling backing. In electrochemical test, the corrosion resistance of weldment with water cooling backing was lower than that without water cooling backing. Because of grain boundary is one kind of defects, which increases the free energy. These would led more ion to react with grain boundary and decreased the corrosion resistance. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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