Prediction of maximum casting defect size in MAR-M-247 alloy processed by hot isostatic pressing

0445954 - ÚFM 2016 RIV SK eng J - Článek v odborném periodiku
Šmíd, Miroslav - Fintová, Stanislava - Kunz, Ludvík - Hutař, Pavel - Hrbáček, K.
Prediction of maximum casting defect size in MAR-M-247 alloy processed by hot isostatic pressing.
Materiálové inžinierstvo - Materials Engineering. Roč. 22, č. 1 (2015), s. 25-32. ISSN 1335-0803
Grant CEP: GA MPO FR-TI4/030; GA MŠMT(CZ) EE2.3.20.0214
Institucionální podpora: RVO:68081723
Klíčová slova: MAR-M 247 * Superalloys * Fatigue * Casting defects * Elevated temperatures
Kód oboru RIV: JL - Únava materiálu a lomová mechanika
http://ojs.mateng.sk/index.php/Mateng/article/view/160/249

Nickel based MAR-M 247 superalloy treated by hot isostatic pressing was investigated with the aim to identify the influence of casting defect size on fatigue life. Two testing temperatures of 650 and 800 °C and one stress amplitude were chosen for fatigue tests. The Murakami approach and the largest extreme value distribution theory were applied. It has been found that the maximum size of casting defects in a specimen can be satisfactorily predicted. Fatigue life of specimens was in good agreement with assumptions based on the evaluation and prediction of the casting defect size.
Trvalý link: http://hdl.handle.net/11104/0248638