通过不同热处理或热机械处理工艺获得了共析钢的4种不同组织,即2种片层间距的珠光体,球化珠光体以及超细晶(α+θ)复相组织.利用室温单轴拉伸实验、SEM及TEM分析了组织状态对共析钢力学性能和塑性失稳行为的影响,结果表明:细化片层间距可以改善片层珠光体组织的协调变形能力并提高强度,均匀伸长率有所降低的同时总伸长率提高.细片层珠光体的拉伸变形失稳符合塑性失稳判据,但不同片层间距的片层珠光体拉伸断裂均属于准解理断裂.与片层珠光体组织相比,球化珠光体和超细晶(α+θ)复相组织的协调变形能力强,虽然在均匀塑性变形阶段均存在少量渗碳体粒子开裂的情况,但拉伸变形失稳均符合塑性失稳判据,拉伸断裂为韧性断裂.与片层珠光体和球化珠光体相比,超细晶(α+θ)复相组织具有较好的强度-塑性配合.
参考文献
[1] | Sujoy S. Hazra;Elena V. Pereloma;Azdiar A. Gazder .Microstructure and mechanical properties after annealing of equal-channel angular pressed interstitial-free steel[J].Acta materialia,2011(10):4015-4029. |
[2] | Gazder A A;Hazra S S;Pereloma E V .Annealing behavior and mechanical properties of severely deformed interstitial free steel[J].Rare Metal Materials and Engineering,2011,530(15):492-503. |
[3] | Yoda R;Shibata K;Morimitsu T et al.Formability of ultrafine-grained interstitial-free steel fabricated by accunulative roll-bonding and subsequent annealing[J].Scripta Materialia,2011,65(03):175-178. |
[4] | R. Song;D. Ponge;D. Raabe .Overview of processing, microstructure and mechanical properties of ultrafine grained bcc steels[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2006(1/2):1-17. |
[5] | Kyung-Tae Park;Yong-Seog Kim;Jung Guk Lee;Dong Hyuk Shin .Thermal stability and mechanical properties of ultrafine grained low carbon steel[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2000(1/2):165-172. |
[6] | Song R;Ponge D;Raabe D;Kaspar R .Microstructure and crystallographic texture of an ultrafine grained C-Mn steel and their evolution during warm deformation and annealing[J].Acta materialia,2005(3):845-858. |
[7] | R. Song;D. Ponge;D. Raabe .Improvement of the Work Hardening Rate of Ultrafine Grained Steels Through Second Phase Particles[J].Scripta materialia,2005(11):1075-1080. |
[8] | R. Song;D. Ponge;D. Raabe .Mechanical properties of an ultrafine grained C-Mn steel processed by warm deformation and annealing[J].Acta materialia,2005(18):4881-4892. |
[9] | Tsuzaki K;Furimoto S;Furuhara T;Maki T;Sato E .Formation of an ( alpha + theta ) microduplex structure without thermomechanical processing in superplastic ultrahigh carbon steels[J].Scripta materialia,1999(6):675-681. |
[10] | Maki T;Furuhara T .Microstructure and mechanical property of ultrafine (α + θ) duplex structure in high carbon steel[J].materials science forum,2003,426-432:19-26. |
[11] | Furuhara T;Mizoguchi T;Maki T .Ultrafine (α + θ) duplex structure formed by cold rolling and annealing of pearlite[J].ISIJ International,2005,45(03):392-398. |
[12] | N. Tsuji;R. Ueji;Y. Minamino .A new and simple process to obtain nano-structured bulk low-carbon steel with superior mechanical property[J].Scripta materialia,2002(4):305-310. |
[13] | R. Ueji;N. Tsuji;Y. Minamino .Ultragrain refinement of plain low carbon steel by cold-rolling and annealing of martensite[J].Acta materialia,2002(16):4177-4189. |
[14] | Akio OHMORI;Shiro TORIZUKA;Kotobu NAGAI .Strain-hardening due to dispersed cementite for low carbon ultrafine-grained steels[J].ISIJ International,2004(6):1063-1071. |
[15] | Torizuka S;Ohmori A;Murty S V S N et al.Effect of strain on the microstructure and mechanical properties of multi-pass warm caliber roiled low carbon steel[J].Scripta Materialia,2006,54(04):563-568. |
[16] | N. Tsuchida;H. Masuda;Y. Harada;K. Fukaura;Y. Tomota;K. Nagai .Effect of ferrite grain size on tensile deformation behavior of a ferrite-cementite low carbon steel[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2008(1/2):446-452. |
[17] | S. Torizuka;E. Muramatsu;S.V.S. Narayana Murty .Microstructure evolution and strength-reduction in area balance of ultrafine-grained steels processed by warm caliber rolling[J].Scripta materialia,2006(8):751-754. |
[18] | KYUNG-TAE PARK;DONG HYUK SHIN .Microstructural Interpretation of Negligible Strain-Hardening Behavior of Submicrometer-Grained Low-carbon Steel during Tensile Deformation[J].Metallurgical and Materials Transactions, A. Physical Metallurgy and Materials Science,2002(3):705-707. |
[19] | Syn C K;Lesuer D;Sherby O D .Influence of microstructure on tensile properties of spheroidized ultrahigh-carbon ,(1.8% C) steel[J].Metallurgical and Materials Transactions A:Physical Metallurgy and Materials Science,1994,25(07):1481-1493. |
[20] | 田景,杨王玥,孙祖庆.工艺参数对低碳钢形变强化相变的影响[J].材料热处理学报,2005(05):62-67. |
[21] | 陈国安,杨王玥,郭守真,孙祖庆.低碳微量铌钢形变过程中动态相变的特点[J].材料热处理学报,2006(06):89-94. |
[22] | 陈伟,李龙飞,杨王玥 |
[23] | 郑成思,李龙飞,杨王玥,孙祖庆.微观组织对共析钢室温加工硬化行为的影响[J].金属学报,2013(03):257-264. |
[24] | Sabirov, I.;Yang, C.;Mullins, J.;Hodgson, P.D..A theoretical study of the structure-property relations in ultra-fine metallic materials with fractal microstructures[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2013:543-548. |
[25] | Stüwe H P;T6th L S .Plastic instability and Lüders bands in the tensile test:the role of crystal orientation[J].Rare Metal Materials and Engineering,2003,358(1-2):17-25. |
[26] | Xiao P;Halldearn RD;Mei J .Mechanisms of the aluminium-iron oxide thermite reaction[J].Scripta materialia,1999(5):541-548. |
[27] | Jonas J J;Holt R A;Coleman C E .Plastic stability in tension and compression[J].Acta Metallurgica,1976,24(10):911-918. |
[28] | Ashby M F .The deformation of plastically non-homogeneous materials[J].Philosophical Magazine,1970,21(170):399-424. |
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