In Situ Imaging of High Cycle Fatigue Crack Growth in Single Crystal Nickel-Base Superalloys by Synchrotron X-RadiationSource: Journal of Engineering Materials and Technology:;2008:;volume( 130 ):;issue: 002::page 21008Author:Liu Liu
,
Naji S. Husseini
,
Christopher J. Torbet
,
Divine P. Kumah
,
Tresa M. Pollock
,
J. Wayne Jones
,
Roy Clarke
DOI: 10.1115/1.2840966Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A novel X-ray synchrotron radiation approach is described for real-time imaging of the initiation and growth of fatigue cracks during ultrasonic fatigue (f=20kHz). We report here on new insights on single crystal nickel-base superalloys gained with this approach. A portable ultrasonic fatigue instrument has been designed that can be installed at a high-brilliance X-ray beamline. With a load line and fatigue specimen configuration, this instrument produces stable fatigue crack propagation for specimens as thin as 150μm. The in situ cyclic loading/imaging system has been used initially to image real-time crystallographic fatigue and crack growth under positive mean axial stress in the turbine blade alloy CMSX-4.
keyword(s): Fatigue , X-rays , Crystals , Nickel , Superalloys , Fatigue cracks , Imaging , Stress AND Cycles ,
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| contributor author | Liu Liu | |
| contributor author | Naji S. Husseini | |
| contributor author | Christopher J. Torbet | |
| contributor author | Divine P. Kumah | |
| contributor author | Tresa M. Pollock | |
| contributor author | J. Wayne Jones | |
| contributor author | Roy Clarke | |
| date accessioned | 2017-05-09T00:28:13Z | |
| date available | 2017-05-09T00:28:13Z | |
| date copyright | April, 2008 | |
| date issued | 2008 | |
| identifier issn | 0094-4289 | |
| identifier other | JEMTA8-27105#021008_1.pdf | |
| identifier uri | http://yetl.yabesh.ir/yetl/handle/yetl/138087 | |
| description abstract | A novel X-ray synchrotron radiation approach is described for real-time imaging of the initiation and growth of fatigue cracks during ultrasonic fatigue (f=20kHz). We report here on new insights on single crystal nickel-base superalloys gained with this approach. A portable ultrasonic fatigue instrument has been designed that can be installed at a high-brilliance X-ray beamline. With a load line and fatigue specimen configuration, this instrument produces stable fatigue crack propagation for specimens as thin as 150μm. The in situ cyclic loading/imaging system has been used initially to image real-time crystallographic fatigue and crack growth under positive mean axial stress in the turbine blade alloy CMSX-4. | |
| publisher | The American Society of Mechanical Engineers (ASME) | |
| title | In Situ Imaging of High Cycle Fatigue Crack Growth in Single Crystal Nickel-Base Superalloys by Synchrotron X-Radiation | |
| type | Journal Paper | |
| journal volume | 130 | |
| journal issue | 2 | |
| journal title | Journal of Engineering Materials and Technology | |
| identifier doi | 10.1115/1.2840966 | |
| journal fristpage | 21008 | |
| identifier eissn | 1528-8889 | |
| keywords | Fatigue | |
| keywords | X-rays | |
| keywords | Crystals | |
| keywords | Nickel | |
| keywords | Superalloys | |
| keywords | Fatigue cracks | |
| keywords | Imaging | |
| keywords | Stress AND Cycles | |
| tree | Journal of Engineering Materials and Technology:;2008:;volume( 130 ):;issue: 002 | |
| contenttype | Fulltext |