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| Fältnamn | Indikatorer | Metadata |
|---|---|---|
| 000 | 03545naa a2200397 4500 | |
| 001 | oai:DiVA.org:kth-323017 | |
| 003 | SwePub | |
| 008 | 230112s2022 | |||||||||||000 ||eng| | |
| 024 | 7 | a https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-3230172 URI |
| 024 | 7 | a https://doi.org/10.1016/j.msea.2022.1442122 DOI |
| 040 | a (SwePub)kth | |
| 041 | a engb eng | |
| 042 | 9 SwePub | |
| 072 | 7 | a ref2 swepub-contenttype |
| 072 | 7 | a art2 swepub-publicationtype |
| 100 | 1 | a Fischer, Timu KTH,Materialvetenskap4 aut0 (Swepub:kth)u1yyr3g2 |
| 245 | 1 0 | a Creep-fatigue properties of austenitic cast iron D5S with tension and compression dwell :b A dislocation density-based crystal plasticity study |
| 264 | 1 | b Elsevier BV,c 2022 |
| 338 | a print2 rdacarrier | |
| 500 | a QC 20230112 | |
| 520 | a To predict and better understand the creep-fatigue behaviour of austenitic cast iron D5S under tension and compression dwell at 800 degrees C, a physics-based crystal plasticity model that describes the complex rate-and temperature-dependent deformation of the material as a function of the dislocation density is implemented. In addition to the tension and compression dwell direction, the effect of three different dwell times (30, 180 and 600 s) on the creep-fatigue properties is investigated. The dislocation density-based crystal plasticity simulations are compared to experimental tests from a prior work. While relaxation tests and low-cycle fatigue (LCF) tests without dwell assist in systematically identifying the material parameters, creep-fatigue (CF) data is used to validate the predictions. The virtual testing is performed on a large-scale representation of the actual test specimen with a polycrystalline structure. To analyse the fatigue damage mechanism, small-scale predictions are also conducted using a micromechanical unit cell approach. Here, a single graphite nodule frequently found in the material is embedded into the austenitic matrix. In the present work, a close agreement is achieved between the predicted CF behaviour and the experimental results. Consistent with the experimental findings, the simulation results show that the addition of compression dwell leads to an uplift of the overall tensile stress level, which significantly reduces the fatigue life of the material. The unit cell studies demonstrate that during this uplift, a strong localisation of stresses and strains arises at the graphite/matrix interface, triggering the nucleation and growth of cavities and/or debonding. | |
| 650 | 7 | a TEKNIK OCH TEKNOLOGIERx Materialteknikx Metallurgi och metalliska material0 (SwePub)205062 hsv//swe |
| 650 | 7 | a ENGINEERING AND TECHNOLOGYx Materials Engineeringx Metallurgy and Metallic Materials0 (SwePub)205062 hsv//eng |
| 653 | a Creep-fatigue | |
| 653 | a Dwell-fatigue | |
| 653 | a Ductile cast iron | |
| 653 | a Crystal plasticity | |
| 653 | a Dislocation density | |
| 700 | 1 | a Xiang, Shengmeiu KTH,Materialvetenskap4 aut0 (Swepub:kth)u15h790p |
| 700 | 1 | a Dahlberg, Carl F. O.,d 1980-u KTH,Teknisk mekanik4 aut0 (Swepub:kth)u11tguno |
| 700 | 1 | a Hedström, Peter,d 1955-u KTH,Materialvetenskap4 aut0 (Swepub:kth)u1hu0w18 |
| 710 | 2 | a KTHb Materialvetenskap4 org |
| 773 | 0 | t Materials Science & Engineeringd : Elsevier BVg 860, s. 144212-q 860<144212-x 0921-5093x 1873-4936 |
| 856 | 4 | u https://doi.org/10.1016/j.msea.2022.144212y Fulltext |
| 856 | 4 8 | u https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-323017 |
| 856 | 4 8 | u https://doi.org/10.1016/j.msea.2022.144212 |
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