High grade galvanized steel in large amounts is needed to match the increasing
demand of automotive industry both in our country and in the world. Stainless steels,
used in fabrication of zinc bath hardware of continuous galvanizing lines, lose their
corrosion resistance due to various mechanisms in such mediums containing molten
metals like zinc and aluminum. Consequently they corrode to the levels where they
should be taken to maintenance or replaced. In this study, corrosion performance and
the effect of typical galvanizing and age treating heat treatments to mechanical
properties of 4 newly developed austenitic stainless steels and AISI 316L grade
stainless steel were investigated and compared with each other. Experimental studies
involved immersion corrosion tests for 168 and 504 hours followed by weight loss
determinations and comparisons of corrosion performances of age treated and
solution annealed stainless steels. Parallel with corrosion testing, delta ferrite content
v
determinations with 3 different methods, tensile tests and v-notch impact tests at 4
different heat exposure conditions were carried out and discussed. 2 new stainless
steel compositions were selected to be used in fabrication of galvanizing hardware
based on the comparisons of corrosion & / mechanical performances of candidate
steels.
| Identifer | oai:union.ndltd.org:METU/oai:etd.lib.metu.edu.tr:http://etd.lib.metu.edu.tr/upload/12614565/index.pdf |
| Date | 01 July 2012 |
| Creators | Ozcan, Emre |
| Contributors | Sevinc, Naci |
| Publisher | METU |
| Source Sets | Middle East Technical Univ. |
| Language | English |
| Detected Language | English |
| Type | M.S. Thesis |
| Format | text/pdf |
| Rights | Access forbidden for 1 year |
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