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.

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.

Study on Strain Hardening Property and Bake Hardening Property of High Aluminum Dual Phase Steel

2013 ◽  
Vol 774-776 ◽  
pp. 573-576
Author(s):  
Wang Hui ◽  
Qing Song Wu ◽  
Cheng Jiang Lin
Keyword(s):  
Strain Hardening ◽  
Dual Phase Steel ◽  
Dual Phase ◽  
Bake Hardening ◽  
Auto Parts ◽  
High Aluminum

In this paper the strain hardening property and the bake hardening property of an original dual phase steel with high Aluminum had been studied. It can be disclosed that the dual phase steel has an excellent strain hardening property and bake hardening property with a strain hardening value of 125MPa and a bake hardening value of 60MPa as well as a total hardening value of 162MPa. The excellent properties of bake hardening and strain hardening will make some contribution to the application properties of the auto parts made by the new dual phase steel. Key Words:dual phase steel, strain hardening, bake hardening

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
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