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Projects / Programmes source: ARIS

Varivost kovin in lomne lastnosti zvarnih spojev (Slovene)

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Periods
January 1, 1999 - December 31, 2003
Research activity

Code Science Field Subfield
2.10.00  Engineering sciences and technologies  Manufacturing technologies and systems   
2.04.00  Engineering sciences and technologies  Materials science and technology   
2.11.00  Engineering sciences and technologies  Mechanical design   

Code Science Field
T130  Technological sciences  Production technology 
T150  Technological sciences  Material technology 
T165  Technological sciences  Laser technology 
T220  Technological sciences  Civil engineering, hydraulic engineering, offshore technology, soil mechanics 
T450  Technological sciences  Metal technology, metallurgy, metal products 
Evaluation (rules)
source: COBISS
Evaluation of bibliographic research performance indicators according to ARIS methodology
Citations Citations for bibliographic records in COBIB.SI that are linked to records in citation databases
source: WoS source: Scopus source: COBISS
Researchers (21)
no. Code Name and surname Research area Role Period No. of publications
1.  17115  Herman Alavančič    Researcher  2001 - 2003  4 
2.  10369  PhD Ivan Anžel  Materials science and technology  Researcher  2001 - 2003  715 
3.  14334  PhD Tonica Bončina  Materials science and technology  Researcher  2001 - 2003  400 
4.  20229  PhD Mihael Brunčko  Materials science and technology  Researcher  2001 - 2003  260 
5.  05168  PhD Vladimir Gliha  Manufacturing technologies and systems  Head  2001 - 2003  338 
6.  16185  PhD Leo Gusel  Manufacturing technologies and systems  Researcher  2001 - 2003  154 
7.  01375  PhD Janez Kramberger  Mechanical design  Researcher  2002 - 2003  536 
8.  15363  MSc Roman Krepek  Manufacturing technologies and systems  Researcher  2001 - 2002  37 
9.  02780  PhD Alojz Križman  Materials science and technology  Researcher  2001 - 2003  773 
10.  11951  PhD Gorazd Lojen  Materials science and technology  Researcher  2001 - 2003  253 
11.  17116  Franc Pernat    Researcher  2001 - 2003  0 
12.  08488  PhD Zdravko Praunseis  Energy engineering  Researcher  2001 - 2002  341 
13.  04005  MSc Anton Pristavec  Manufacturing technologies and systems  Researcher  2001 - 2002  211 
14.  12310  PhD Bogdan Pučko  Manufacturing technologies and systems  Researcher  2002 - 2003  50 
15.  19094  PhD Danilo Rojko  Mechanical design  Researcher  2001 - 2003  31 
16.  14335  PhD Rebeka Rudolf  Manufacturing technologies and systems  Researcher  2001 - 2003  1,097 
17.  16170  PhD Matjaž Šraml  Traffic systems  Researcher  2002 - 2003  481 
18.  17123  Rok Šulek    Researcher  2001 - 2003  79 
19.  10607  MSc Arpad Treiber  Manufacturing technologies and systems  Researcher  2001 - 2003  25 
20.  15682  PhD Tomaž Vuherer  Manufacturing technologies and systems  Researcher  2002 - 2003  515 
21.  12295  PhD Franc Zupanič  Materials science and technology  Researcher  2001 - 2003  483 
Organisations (1)
no. Code Research organisation City Registration number No. of publications
1.  0795  University ob Maribor, Faculty of mechanical engineering  Maribor  5089638010  23,917 
Abstract
The research program is dealing with the joining of technical metals by using welding and development of new materials and technologies. a) Satisfactory weldability is prerequisite for joining by welding of metals for long term use, but not the only one base of weld joint strength. Fusion welded joints are never totally isotropic and homogeneous in the sense of defectiveness and mechanical properties. Additional stresses are present in the weld joints not caused by external loading (residual stresses). Possible existence of LBZ (local brittle zone) and crack-like defects interacting with stresses are of an extreme importance. To overcome this problem over-matched joints are often used in technically very demanding equipment. Measure of weld joint mis-matching is ratio of weld and base metal yield strengths (M). Fracture toughness testing can reveal brittle parts of weld joint more reliably than Charpy-impact testing but they have to be hit (sampled) by the crack. Through-thickness crack in the full-thickness specimen including the joint is usually prepared by controlled fatigue loading. Crack positioned in the weld metal and in HAZ is usualy practiced. The result of crack existence in the thick specimen under loading is constraint and three-axiallity of stresses. Three-axial stress state is increasing possibility of brittle fracture occurance on LBZs because of their low toughness. All findings can be after testing proved by metallography and fractography (post-testing sectioning). Mutual relationships exist between material fracture toughness and Charpy-impact toughness of isotropic polycrystalline metallic materials. The aim of this research program is to find by experiments such a relationship valid for an over-matched weld joint (M?1,25). b) The research programme at development of new materials and technologies is directed toward (1) manufacturing of alloys with special microstructures and properties with continuous casting technologies, and (2) manufacturing of discontinuously reinforced MMC composites (especially aluminium and copper base composites). The focus is given to the study of physical and chemical processes taking place in liquid, semi-solid and solid state. The fundamental understanding of the processes not only enables attainment of desired structures and properties of materials, but also contributes to the development of manufacturing technologies.
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