| Title |
Research papers / Mechanical Behaviors : Evaluation of Creep Crack Growth Behavior in Type 316LN Stainless Steel |
| Authors |
이경용(Kyung Yong Lee),김우곤(Woo Gon Kim),유우석(Woo Seog Ryu),윤기봉(Kee Bong Yoon) |
| ISSN |
1738-8228(ISSN), 2288-8241(eISSN) |
| Abstract |
Creep crack growth (CCG) behavior of type 316LN stainless steel was investigated using C^* and C_t as characterizing fracture parameters under elevated temperatures The CCG tests were conducted under various applied load levels at 600℃. For determining material constants required for calculating the fracture parameters, tension and creep tests were also conducted at 600℃. Results slowed good agreements between the estimated values and measured ones for both of the C^* and C_t. Since the C_t was applicable to transient creep condition as well as extensive creep condition, the C_t was employed in determining a CCG model for 316 LN. Fracture mode near the crack tip was a typical intergranular fracture as shown in the creep tests. The model determined in this study can be used to evaluate creep crack growth life of components made of 316LN steel. |