Effect of Fine Grained Dual Phase Steel on Bake Hardening Properties

2016 ◽  
Vol 88 (3) ◽  
pp. 1600150 ◽  
Author(s):  
Nattavut Ormsuptave ◽  
Vitoon Uthaisangsuk
Keyword(s):  
Dual Phase Steel ◽  
Dual Phase ◽  
Bake Hardening ◽  
Fine Grained

Bake Hardening of Laser Welded Dual Phase Steel

2003 ◽  
Vol 74 (10) ◽  
pp. 639-645 ◽  
Author(s):  
Daniel Krizan ◽  
Tom Waterschoot ◽  
Ali I. Koruk ◽  
Bruno C. De Cooman
Keyword(s):  
Dual Phase Steel ◽  
Dual Phase ◽  
Bake Hardening

Development of the 600MPa High Aluminum Galvanized Dual Phase Steel and its Application

2011 ◽  
Vol 228-229 ◽  
pp. 1169-1173
Author(s):  
Hui Wang ◽  
Cheng Jiang Lin ◽  
Zhao Jun Deng ◽  
Peng Yang ◽  
Fei Yan ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Tensile Test ◽  
Grain Boundaries ◽  
Retained Austenite ◽  
Dual Phase Steel ◽  
Dual Phase ◽  
Bake Hardening ◽  
Tem Analysis ◽  
Auto Parts ◽  
High Aluminum

An original 600MPa high aluminum galvanized dual phase steel had been successfully developed in this paper. The microstructure analysis showed that the microstructures of the steel mainly consist of ferrite and 8%~11% martensite as well as 4%~6% retained austenite which distributed around the ferrite grain boundaries. TEM analysis demonstrated that there exists lots of high density dislocation in ferrite, obvious twin-structures in martensite and some retained austenite in the microstructures. The existence of the retained austenite makes some contribution to the higher elongation of the steel. The tensile test showed that the steel delivers an excellent mechanical properties of Rp0.2=350~400MPa,Rm=610~650MPa, A80mm=26%~30%, n=0.17~0.21 and an excellent bake-hardening value of 50~70MPa. Ball-Punch Experiments showed that the galvanizing dual phase steel had a good and satisfying coating adhesion. Owe to the excellent formability, the steel has successfully been used in the production of some auto parts.

scholarly journals FINE GRAINED DUAL PHASE STEEL BY THERMO MECHANICAL PROCESSING

2013 ◽  
pp. 237-240
Author(s):  
NEERAJAGARWAL NEERAJAGARWAL ◽  
G.P. CHAUDHARI ◽  
S.K. NATH
Keyword(s):  
Dual Phase Steel ◽  
Intercritical Annealing ◽  
Hsla Steel ◽  
Coarse Grained ◽  
Dual Phase ◽  
Mechanical Processing ◽  
Dp Steel ◽  
Fine Grained ◽  
Ultrafine Grained ◽  
Open Die Forging

The effect of thermo mechanical processing (TMP) on the mechanical properties of HSLA steel was investigated. TMP was conducted using a laboratory open die forging machine.Multiaxial forging (MAF) and intercritical annealing methods were used. TMP is designed to obtain ultrafine grained (UFG) steels. MAF is performed on prismatic shaped samples up to nine strain forging steps to produce ultra-fine grained (UFG) ferrite-pearlite steel with higher strength as compare to as received steel.Fine grained (FG) ferrite-martensite dual phases (DP) steel was fabricated by using combined effect of warm MAF and intercritical annealing. The tensile strength of FG-DP steels was much higher than that of the coarse-grained (CG) counterpart, and the uniform elongations were significantly enhanced. This steel exhibited the superior combination of higher strength and more rapid strain hardening compared to those of CG-DP steel was explained in terms of their specific microstructural features.

Bake Hardening Behavior of Cold-Rolled Dual Phase Steel Sheets

2011 ◽  
Vol 266 ◽  
pp. 284-287
Author(s):  
Cai Nian Jing ◽  
Xiao Hui Chen ◽  
Ming Gang Wang ◽  
Qi Zhong Tan
Keyword(s):  
Tensile Strength ◽  
Dual Phase Steel ◽  
Holding Time ◽  
Dual Phase ◽  
Bake Hardening ◽  
Steel Sheets ◽  
Hardening Behavior ◽  
Cold Rolled

Effects of pre-straining, baking temperature and baking time on bake hardening (BH) behavior of cold-rolled dual phase steel were investigated. The results show that the investigated dual phase steel has clear BH behavior. Increased pre-straining led to the BH value decreased, while increased the baking temperature and prolonged baking holding time can all increase the BH value. The mechanics of bake hardening behavior in dual phase steel were discussed, and the effects of pre-staining on tensile strength after baking were also analyzed.

Sign in / Sign up

Export Citation Format

Share Document