SSL [SSL] Prof. Sung-Joon Kim: Fe-Zn reaction and its influence on microcracks during hot tensile
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댓글 0건 조회 612회 작성일 2018-12-31 16:28
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Fe-Zn reaction was investigated by annealing a galvanized 22MnB5 steel sheet at 500–900 ° C for 5 min. The observed Fe-Zn intermetallic compounds within the coating depended on the annealing temperature. As the temperature increased, the coating phase changed from δ via Γ1 to Zn-rich ferrite. At the temperature lower than or equal to 700 ° C, Zn seems to have diffused along the grain boundaries of substrate, which formed fine Zn-rich ferrite grains. Annealing at higher temperature produced coarse Zn-rich ferrite grains which contributed to significant thickening of the coating layer. By tensile straining at the annealing temperature, it was found that the fine Zn-rich ferrite along the grain boundaries was the origin of the microcracks in the substrate.
- 이전글[SSL] Prof. Sung-Joon Kim: Effects of carbon and nitrogen on austenite stability and tensile deformation 18.12.31
- 다음글[ADL] Prof. Yoon-Uk Heo: Determination of Yield Stress in a Duplex Steel with a + c Lamellar Structure 18.11.30
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