| Title |
The Effect of Thickness on the Structure and Tensile Properties of the Melt - Quenched AISI 304 Stainless Steel |
| Authors |
오명석(Myeong Suck Oh); 조성석(Seong Seock Cho); 최필규(Pil Kyu Choi) |
| Abstract |
Using twin-roller type melt-quenching technique, the effect of thickness on the microstructure and the tensile properties of AISI 304 stainless steel were investigated by optical microscope, X-ray diffractometer and tensile test. In AISI 304 stainless steel, sheets whose thickness was 0.3-1.0 ㎜ could be produced. As the thickness increased, the cooling rate of melt-quenched AISI 304 stainless steel decreased. The microstructure of 0.8 ㎜-thick sheet consisted of columnar grains which formed near the sheet surface and equiaxed grains which formed near the center of the sheet cross-section. As the thickness increased in melt-quenched AISI 304 stainless steel, the Vickers hardness, 0.2% proof stress and tensile strength increased whereas the elongation decreased. |