SM20C강의 열피로 특성에 관한 연구 : 열피로균열 성장과정을 중심으로 Centering around to propagation behavior of heat fatigue crack = A Study on Characteristic of Heat Fatigue on the SM20C Steel

다국어 초록 (Multilingual Abstract)

The mechanical materials which they has used in an fluid and gas atmosphere of high temperature should be good state of persevering-oxidation and corrosion.
They should sufficiently be in possession strength at high temperature.
The design of structure materials and estimation of satisfaction has satisfactorily been difficult as a design method allowance stress giving suitable satisfaction at tensile stress of materials and yilding point.
It is necessary specific character that be introduced the conception by technologically using breaking mechanics to sufficiently analysis and interpretation.
In general, adding to pre-stress as tensile stress and compression to materials at the normal temperature should be changed fatigue limit with work hardening.
In this paper, I have experimentally received change to fatigue limit as elevated temperature that I have applied heat to 400℃ temperature from normal temperature SM 20C steel.
I have experimentally studied about to the birth of a small surface crack and the specific glowing.
I have theoretically writed about applying to breaking mechanics and limit point.

목차 (Table of Contents)

• Ⅰ.序論
• Ⅱ.本論
• 1.실험방법
• 2.인공 결합재의 S-N 특성
• Ⅲ.結論