Brittle Fracture Mechanism and Impact Energy Scattering of Quenched and Tempered 07MnNiMoDR Steel
SHI Kun1， HOU Hong2， LI Jin-fu1， ZHANG Han-qian1, 3
1. School of Materials Science and Engineering， Shanghai Jiao Tong University， Shanghai 200240， China; 2. School of Metallurgy， Northeastern University， Shenyang 110819， China; 3. Baosteel Research Institute， Baoshan Iron & Steel Co.， Ltd.， Shanghai201900， China.
SHI Kun， HOU Hong， LI Jin-fu， ZHANG Han-qian. Brittle Fracture Mechanism and Impact Energy Scattering of Quenched and Tempered 07MnNiMoDR Steel[J]. Journal of Northeastern University Natural Science, 2017, 38(3): 350-355.
[1]Kang J S，Seol J B，Park C G.Three-dimensional characterization of bainitic microstructures in low-carbon high-strength low-alloy steel studied by electron backscatter diffraction［J］.Materials Characterization，2013，79(3):110-121. [2]孙明雪，王猛，衣海龙，等.回火温度对低碳贝氏体高强度钢组织性能的影响［J］.东北大学学报(自然科学版)，2013，34(12):1725-1729.(Sun Ming-xue，Wang Meng，Yi Hai-long，et al.Effects of tempering temperatures on microstructure and properties of low carbon high strength bainitic steels［J］.Journal of Northeastern University(Natural Science)，2013，34(12):1725-1729.) [3]Samal M K，Chakravartty J K，Seidenfuss M，et al.Evaluation of fracture toughness and its scatter in the DBTT region of different types of pressure steels［J］.Engineering Failure Analysis，2011，18(1):172-185. [4]Zhang X Z，Knott J F.The statistical modelling of brittle fracture in homogeneous and heterogeneous steel microstructures［J］.Acta Materialia，2000，48(9):2135-2146. [5]Beremin F M，Pineau A，Mudry F.A local criterion for cleavage fracture of a nuclear pressure vessel steel［J］.Metallurgical and Materials Transactions:A，1983，14 (11): 2277-2287. [6]Bowen P，Druce S G，Knott J F.Micromechanical modeling of fracture toughness［J］. Acta Metallurgica，1987，35(7):1735-1746. [7]Chen J H，Cao R.Micromechanism of cleavage fracture of metals［M］.London:Elsevier，2014. [8]Lan H F，Du L X，Liu X H.Microstructure and mechanical properties of a low carbon bainitic steels［J］.Steel Research International，2013，84(4):352-361. [9]Cao R，Zhang X B，Wang Z， et al.Investigation of microstructural features determining the toughness of 980MPa bainitic weld metal［J］. Metallurgical and Materials Transactions:A，2014，45 (2):815-834. [10]段争涛，李艳梅，朱伏先，等.不同工艺低碳Nb-B贝氏体钢组织性能［J］.东北大学学报(自然科学版)，2012，33(6):823-826.(Duan Zheng-tao，Li Yan-mei，Zhu Fu-xian，et al.Microstructures and mechanical properties of low carbon Nb-B bainitic steel with different processing［J］.Journal of Northeastern University(Natural Science)，2012，33(6):823-826.) [11]Chen J H，Wang G Z，Yan C，et al.Advances in the mechanism of cleavage fracture of low ally steel at low temperature.PartⅠ:critical event［J］.International Journal of Fracture，1997，83(2):105-120. [12]Ray A，Sivaprasad S，Chakrabarti D.A critical grain size concept to predict the impact transition temperature of Ti-microalloyed steels［J］.International Journal of Fracture，2012，173(2):215-222. [13]Wang G Z，Chen J H，Wang J G.On the characteristic distance and minimum fracture toughness for cleavage fracture in a C-Mn steel［J］.International Journal of Fracture，2002，118(1):57-76. [14]Rancel L，Gómez M，Medina S F，et al.Measurement of bainite packet size and its influence on cleavage fracture in a medium carbon bainitic steel［J］. Materials Science Engineering:A，2011，530(1):21-27. [15]Shi K，Hou H，Chen J B，et al.Effect of bainitic packet size distribution on impact toughness and its scattering in the ductile-brittle transition temperature region of Q&T Mn-Ni-Mo bainitic steels［J］.Steel Research International，2016，87(2):165-172.
