Abstract
In this study tensile and impact properties of three hypo-eutectoid steels containing different microalloying elements were investigated in terms of microstructural factors such as pro-eutectoid ferrite grain size, pearlite fraction, interlamellar spacing, and cementite thickness. Yield point phenomenon appeared in all the steel specimens during tensile testing, and ultimate tensile stress was mainly dependent on pearlite fraction. On the other hand, the refinement of austenite grain size caused by the addition of micro-alloying elements resulted in the increment of ferrite volume fraction and carbon contents in pearlite because of the refinement of pro-eutectoid ferrite grain size. As a result, cementite thickness in pearlite increased and had an effect on deteriorating the low temperature impact toughness.
| Translated title of the contribution | Comparison of Tensile and Impact Properties of Hypo-Eutectoid Steels Containing Micro-Alloying Elements |
|---|---|
| Original language | Korean |
| Pages (from-to) | 6-12 |
| Number of pages | 7 |
| Journal | 열처리공학회지 |
| Volume | 30 |
| Issue number | 1 |
| DOIs | |
| State | Published - 2017 |