Effect of bake-hardening on the structure-property relationship of multiphase steels for the automotive industry
Data(s) |
01/01/2009
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Resumo |
The effect of a bake-hardening (BH) treatment on the microstructure and mechanical properties has been studied in C-Mn-Si TRansformation Induced Plasticity (TRIP) and Dual Phase (DP) steels after: (i) thermomechanical processing (TMP) and (ii) intercritical annealing (IA). The steels were characterized using X-ray diffraction, transmission electron microscopy (TEM) and three-dimensional atom probe tomography (APT). All steels showed high BH response. however, the DP and trip steels after IA/BH showed the appearance of upper and lower yield points, while the stress-strain behavior of the trip steel after TMP/BH was still continuous. This was due to the higher volume fraction of bainite and more stable retained austenite in the TMP/BH steel, the formation of plastic deformation zones with high dislocation density around the "as-quenched” martensite and “TRIP” martensite in the IA/BH DP steel and IA/BH TRIP steel, respectively.<br /> |
Identificador | |
Idioma(s) |
eng |
Publicador |
Wiley |
Relação |
http://dro.deakin.edu.au/eserv/DU:30025570/hodgson-effectofbakehardening-2009.pdf http://translate.google.com.au/translate?hl=en&sl=de&u=http://www.stahleisen.de/html/home.php%3Fpage%3Dzeitschriften%26title%3Dsteelresearch_english&ei=-2TGS7mFGs-IkAXcvdyuDg&sa=X&oi=translate&ct=result&resnum=2&ved=0CBEQ7gEwAQ&prev=/search%3Fq%3DSteel%2BResearch%2BInternational%26hl%3Den%26client%3Dfirefox-a%26hs%3Dq1D%26rls%3Dorg.mozilla:en-US:official |
Direitos |
2009, Wiley |
Palavras-Chave | #bake-hardening #TRIP steel #DP steel #thermomechanical processing #intercritical annealing #TEM #APT |
Tipo |
Journal Article |