Technological mode progress demands the use of materials at high temperature and pressure. Constant load creep tests have been carried out over the range of stresses at high temperatures. One of the most critical factors in considering such applications as the most critical one is the creep behavior. In order to investigate the creep behavior in this study, the stress exponents during creep were determined over the temperature range of 275℃ to 325℃ and the stress range of 36MPa to 72MPa. The applicability of modified Monkman-Grant relationship was also discussed.

Abstract
 1. 서론
 2. 재료 및 방법
 3. 크리프 이동
  3.1 최소크리프 속도와 응력의존성
  3.2 크리프 파단수명과 응력지수와의 관계
 4. 시험결과 및 데이터 분
  4.1 응력지수의 계산
  4.2 파단부의 파괴기구
 5. 결론
 참고문헌

• 배춘익(경남정보대학 기계설계과 교수) | Bae, Choon-Ik
• 진도훈((주)지브텍 기술연구소 연구소장) | Chin, Do-Hun