| Title |
Statistical evaluation of low cycle durability for corrosion and heat-resistant steels welded joints materials at room and elevated temperature / |
| Another Title |
Korozijai ir karščiui atsparių plienų suvirintųjų jungčių medžiagų mažaciklio ilgaamžiškumo statistinis įvertinimas kambario ir aukštesnėje temperatūroje. |
| Authors |
Daunys, M ; Stulpinaitė, A |
| Full Text |
|
| Is Part of |
Mechanika.. Kaunas : Technologija. 2009, Nr. 1, p. 13-18.. ISSN 1392-1207. eISSN 2029-6983 |
| Abstract [eng] |
In this work low cycle fatigue durability dependence upon mechanical characteristics for corrosion and heat-resistant steels and their weld metals used in nuclear engineering was analyzed. The results of 55 corrosion and heat-resistant steels, 36 their weld metals at room and 46 corrosion and heat-resistant steels at elevated temperatures are obtained in the laboratories of Kaunas University of Technology and in Slovakia, Russia, and Hungary. Parameters of low cycle curves according plastic strain Cp, mp and elastic strain Ce , me for these steels and their weld metals at room and elevated temperatures are analyzed. Statistical analysis confirmed, that fracture characteristics and modified plasticity are independent values, they have normal distribution and durability has linear correlation with the modified plasticity (σ u σ y )Z . Analytical dependences of constants Ce, me, Cp, mp on modified plasticity are proposed for these materials at room and elevated temperatures. The comparison of calculated and experimental durability results showed, that the proposed analytical dependencies may be used for preliminary estimation of low cycle durability of the investigated materials. |
| Published |
Kaunas : Technologija |
| Type |
Journal article |
| Language |
English |
| Publication date |
2009 |
| CC license |
|
