Stress state effect on dynamic strain aging and surface markings during stretching of AlMg7 alloy sheet
Abstract
Stress state effect on dynamic strain aging (DSA) and the related surface appearance was analyzed in uniaxial and biaxial room temperature stretching of AlMg7 alloy sheet. In uniaxial tension the serrated yielding was found pertinent at the entire strain range for the tested material. Stretcher markings, usually noted as A ("flamboyant") type, formed during yield point elongation, while type B ("parallel bands") appeared at higher strains, due to the Portevin Le Chatelier effect. Stretching the tested sheet material over an hemispherical punch, and simulating a different degree of biaxiality, the dynamic strain aging (DSA) appeared to be suppressed by increasing the biaxiality, and accordingly the surface morphology was also changed in a complex manner.
Keywords:
AlMg alloy / biaxial stretching / serrated yielding / surface markingsSource:
Materials Science Forum, 1998, 282-283, 309-314Publisher:
- Trans Tech Publications Ltd.
DOI: 10.4028/www.scientific.net/MSF.282-283.309
ISSN: 0255-5476
WoS: 000075079900043
Scopus: 2-s2.0-11744376085
Institution/Community
Tehnološko-metalurški fakultetTY - JOUR AU - Romhanji, Endre AU - Glišić, Dragomir AU - Popović, Miljana AU - Milenković, Vojin PY - 1998 UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/206 AB - Stress state effect on dynamic strain aging (DSA) and the related surface appearance was analyzed in uniaxial and biaxial room temperature stretching of AlMg7 alloy sheet. In uniaxial tension the serrated yielding was found pertinent at the entire strain range for the tested material. Stretcher markings, usually noted as A ("flamboyant") type, formed during yield point elongation, while type B ("parallel bands") appeared at higher strains, due to the Portevin Le Chatelier effect. Stretching the tested sheet material over an hemispherical punch, and simulating a different degree of biaxiality, the dynamic strain aging (DSA) appeared to be suppressed by increasing the biaxiality, and accordingly the surface morphology was also changed in a complex manner. PB - Trans Tech Publications Ltd. T2 - Materials Science Forum T1 - Stress state effect on dynamic strain aging and surface markings during stretching of AlMg7 alloy sheet EP - 314 SP - 309 VL - 282-283 DO - 10.4028/www.scientific.net/MSF.282-283.309 ER -
@article{ author = "Romhanji, Endre and Glišić, Dragomir and Popović, Miljana and Milenković, Vojin", year = "1998", abstract = "Stress state effect on dynamic strain aging (DSA) and the related surface appearance was analyzed in uniaxial and biaxial room temperature stretching of AlMg7 alloy sheet. In uniaxial tension the serrated yielding was found pertinent at the entire strain range for the tested material. Stretcher markings, usually noted as A ("flamboyant") type, formed during yield point elongation, while type B ("parallel bands") appeared at higher strains, due to the Portevin Le Chatelier effect. Stretching the tested sheet material over an hemispherical punch, and simulating a different degree of biaxiality, the dynamic strain aging (DSA) appeared to be suppressed by increasing the biaxiality, and accordingly the surface morphology was also changed in a complex manner.", publisher = "Trans Tech Publications Ltd.", journal = "Materials Science Forum", title = "Stress state effect on dynamic strain aging and surface markings during stretching of AlMg7 alloy sheet", pages = "314-309", volume = "282-283", doi = "10.4028/www.scientific.net/MSF.282-283.309" }
Romhanji, E., Glišić, D., Popović, M.,& Milenković, V.. (1998). Stress state effect on dynamic strain aging and surface markings during stretching of AlMg7 alloy sheet. in Materials Science Forum Trans Tech Publications Ltd.., 282-283, 309-314. https://doi.org/10.4028/www.scientific.net/MSF.282-283.309
Romhanji E, Glišić D, Popović M, Milenković V. Stress state effect on dynamic strain aging and surface markings during stretching of AlMg7 alloy sheet. in Materials Science Forum. 1998;282-283:309-314. doi:10.4028/www.scientific.net/MSF.282-283.309 .
Romhanji, Endre, Glišić, Dragomir, Popović, Miljana, Milenković, Vojin, "Stress state effect on dynamic strain aging and surface markings during stretching of AlMg7 alloy sheet" in Materials Science Forum, 282-283 (1998):309-314, https://doi.org/10.4028/www.scientific.net/MSF.282-283.309 . .