《Table 2.Mechanical properties of TiN and Al2O3 inclusions by nanoindentation tests》

《Table 2.Mechanical properties of TiN and Al2O3 inclusions by nanoindentation tests》   提示:宽带有限、当前游客访问压缩模式
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《Comparison between the surface defects caused by Al_2O_3 and TiN inclusions in interstitial-free steel auto sheets》


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The results of nanoindentation tests are shown in Table 2.Because of the smaller size of Ti N,it was difficult for the indenter to absolutely hit the inclusion;therefore,few data were obtained on TiN inclusions,but the results are similar to those of Ref.[11].Table 2 shows that in as-cast and rolled states,the average hardnesses of Al2O3 inclusions were2.935 and 2.528 GPa,respectively,and the hardnesses of Ti N inclusions were 12.200 and 12.603 GPa,respectively.The hardnesses of matrixes in as-cast and rolled states were1.872 and 1.739 GPa,respectively.This shows that the hardnesses of Al2O3 and Ti N inclusions were much higher than that of the matrix,and the hardness of TiN was about 7times as high as that of the matrix.These inclusions tend to cause defects in the rolling process.