Strength as the basis of structural reliability of steel and alloys
Journal: Construction, materials science, mechanical engineering (Vol.3, No. 80)Publication Date: 2015-03-24
Authors : Yu. Ya. Meshkov;
Page : 204-209
Keywords : steel; strength; reserve strength; notch; crack; reliability;
Abstract
Task o f the work. This research is aimed at development of a methodology for the efficient use of the set of mechanical properties as a mean to increase the structural reliability of metals and alloys in products and structures. Technique. The development of the novel conception of force reliability of structural alloys, which is based on the concept of both strength margins and strength endurance as special mechanical properties responsible for resistance to embrittlement of alloys in products, is offered. Results. Analysis of the parameters of embrittlement of steels 40 and 30KhGSA on specimens with circular notches depending on strength of these steels was executed. A significant difference in regularities of embrittlement and loss of mechanical endurance of steels, which is related to difference in the nature of protective function of both strength and endurance margins under the effect ofstress raisers on steels of different strength, was established. Scientific novelty. Methodology for assessment of susceptibility toembrittlement of alloys based on the analysis of strength margin is novel. Practical importance. Adequate accounting for bothstrength and endurance margin of steels will reduce the danger of brittle fracture of products due to cracks and stress raisers.
Other Latest Articles
- Analysis of accidents and their principal reasons
- Parameters control of steel diffusion layer in the process of thermochemical treatment
- The impact of internal and external constraint on the index of safe organization of execution area production of works
- Role of structural-phase condition in change of service properties of welded joints from complexly alloyed alloys
- Ensuring optimal parameters of microclimate in the premises of buildings
Last modified: 2016-11-09 21:47:28