|
|
|
| Cold Bending Fracture of HRB400 Screw Thread Steel Bar |
| ZHOU Gang,ZHANG Jia-xiang,CAI Xiao-xia,GAO Chang-yi |
| Technology Center, Shougang Shuicheng Iron and Steel Group Co., Ltd., Liupanshui 553028, Guizhou, China |
|
|
|
|
Abstract By analyzing the chemical composition, observing the fracture morphology and micnostructure as well as the fracture sample appearance, measuring the mechanical properties and comparing the force-displacement figures, the cause of fracture of HRB400 rebar can be confirmed that the tensely-straightening made the yield disappear, elongation and bending radius decrease that result in fracture during cold-bending process.
|
|
Received: 01 June 2012
Published: 17 December 2013
|
|
|
|
|
|
|
2013, Vol. 31 
