利用液压试验机对金属钛、镁和钴进行循环加载-卸载压缩试验,利用引伸计测量应变,获得样品的应力-应变曲线.钛、镁和钴因为六方密堆积晶体结构,具有塑性各向异性,导致一定的非线性弹性.这些非线性弹性在循环加载应力-应变曲线中表现为滞后环.研究表明,适当的预变形可以增大这些材料的非线性弹性.粗晶样品一般比细晶样品具有较大的非线性弹性.一种源于三元碳化物Ti3SiC2的初始弯折带(Incipient kink bands)理论可以解释这些材料的非线性弹性以及与非线性弹性相联系的微屈服、阻尼减震.一种经典滞后模型Preisach-Mayergoyz模型,可以用来计算这些材料的非线性变形量.
参考文献
[1] | Yoo M H;Wei C T .Slip modes of hexagonal-close-packed metals[J].Journal of Applied Physics,1967,38(11):4317-4322. |
[2] | Rosi F D;Dube C A .Mechanism of plastic flow in titanium-determination of slip and twinning elements[J].Transactions AIME,1953,197:257-265. |
[3] | Laura B. Addessio;Ellen K. Cerreta;George T. Gray III .Mechanical Behavior of Zirconium and Hafnium in Tension and Compression[J].Metallurgical and Materials Transactions, A. Physical Metallurgy and Materials Science,2005(11):2893-2903. |
[4] | 王学泽;尹志民 .铍材微屈服强度测试方法[J].理化检验-物理分册,1998,34(10):20-21. |
[5] | 钟景明,高勇,王东新,王学泽,王零森.金属铍的微屈服行为及机理[J].中国有色金属学报,2004(10):1637-1641. |
[6] | G.E. Mann;T. Sumitomo;C.H. Caceres;J.R. Griffiths .Reversible plastic strain during cyclic loading-unloading of Mg and Mg-Zn alloys[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2007(1/2):138-146. |
[7] | J. Koike .Dislocation Plasticity and Complementary Deformation Mechanisms in Polycrystalline Mg Alloys[J].Materials Science Forum,2004(Pt.1):665-668. |
[8] | Gharghouri M A;Weatherly G C;Embury J D et al.Study of the mechanical properties of Mg-7.7at% Al by in-situ neutron diffraction[J].Philosophical Magazine A:Physics of Condensed Matter:Structure,Defects and Mechanical Properties,1999,79(07):1671-1695. |
[9] | Zhang J;Perez R J;Lavernia E J .Documentation of damping capacity of metallic,ceramic and metal-matrix composite materials[J].Journal of Materials Science,1993,28:2395-2404. |
[10] | Reed-Hill R E;Dahlberg E P;Slippy W A .Some anelastic effects in zirconium at room temperature resulting from prestrain at 77°K[J].Transactions AIME,1965,233:1766-1771. |
[11] | Guyer R A;Johnson P A .Nonlinear mesoscopic elasticity:Evidence for a new class of materials[J].Physics Today,1999,52(04):30-36. |
[12] | 关晶波,王建祥,赵永红,苏先樾,王仁.滞后细观模型在岩石力学中的应用[J].力学进展,2004(03):349-359. |
[13] | 席道瑛,王鑫,陈运平.描写岩石非线性弹性滞后和记忆的宏观模型[J].岩石力学与工程学报,2005(13):2212-2219. |
[14] | M. W. Barsoum;T. Zhen;S. R. Kalidindi;M. Radovic;A. Murugaiah .Fully reversible, dislocation-based compressive deformation of Ti_3SiC_2 to 1 GPa[J].Nature materials,2003(2):107-111. |
[15] | Zhou A G;Barsoum M W;Basu S et al.Incipient and regular kink bands in dense and 10 vol% porous Ti2 AlC[J].Acta Materialia,2006,54:1631-1639. |
[16] | Amini S;Zhou A;Gupta S;DeVillier A;Finkel P;Barsoum MW .Synthesis and elastic and mechanical properties of Cr2GeC[J].Journal of Materials Research,2008(8):2157-2165. |
[17] | Molina-Aldareguia J M;Emmerlich J;Palmquist J-P et al.Kink formation around indents in laminated Ti3 SiC2 thin films studied in the nanoscale[J].Scripta Materialia,2003,49(02):155-160. |
[18] | Barsoum M W;Farber L;El-Raghy T .Dislocations,Kink bands and room-temperature plasticity of Ti3SiC2[J].Metallurgical and Materials Transactions A:Physical Metallurgy and Materials Science,1999,30:1727-1738. |
[19] | P. Finkel;A. G. Zhou;S. Basu;O. Yeheskel;M. W. Barsoum .Direct observation of nonlinear acoustoelastic hysteresis in kinking nonlinear elastic solids[J].Applied Physics Letters,2009(24):241904-1--241904-3-0. |
[20] | M. Fraczkiewicz;A.G. Zhou;M.W. Barsoum .Mechanical damping in porous Ti_3SiC_2[J].Acta materialia,2006(19):5261-5270. |
[21] | Barsoum MW;Zhen T;Zhou A;Basu S;Kalidindi SR .Microscale modeling of kinking nonlinear elastic solids[J].Physical review, B. Condensed matter and materials physics,2005(13):4101-1-4101-8-0. |
[22] | A.G. ZHOU;M.W. BARSOUM .Kinking Nonlinear Elasticity and the Deformation of Magnesium[J].Metallurgical and Materials Transactions, A. Physical Metallurgy and Materials Science,2009(7):1741-1756. |
[23] | A.G. Zhou;S. Basu;M.W. Barsoum .Kinking nonlinear elasticity, damping and microyielding of hexagonal close-packed metals[J].Acta materialia,2008(1):60-67. |
[24] | Mayergoyz I D .Mathematical-models of hysteresis[J].Physical Review Letters,1986,56(15):1518-1521. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分:
-
10%
-
20%
-
30%
-
40%
-
50%