采用平行模压和交叉模压两种模压形变方式细化H62黄铜,用光学显微镜、SEM和TEM观察了黄铜经不同模压形变方式后试样的显微组织.结果表明:H62黄铜经模压形变后的试样中出现了亚微米和纳米尺寸的形变孪晶.与平行模压试样相比,交叉模压后试样的晶粒尺寸更小,并在晶粒内有更密集和更均匀的亚微米和纳米尺寸的形变孪晶.通过对试样截面和表面显微硬度的分析:交叉模压形变后的试样比平行模压形变后的试样具有更好的组织均匀性和更高的硬度值.
参考文献
| [1] | Segal V M;Beznikov V I;Drabyshevskii A E.Plasticheskaya obrabotka metallov prostym sdvigom (plastic metal working by simple shear)[J].Metally,1981(01):115-123. |
| [2] | Valiev R Z .Nanomaterial advantage[J].Nature,2002,419:887-888. |
| [3] | Horita Z.;Furukawa M. .SUPERPLASTIC FORMING AT HIGH STRAIN RATES AFTER SEVERE PLASTIC DEFORMATION[J].Acta materialia,2000(14):3633-3640. |
| [4] | Rajinikanth V;Gaurav Arora;Narasaiah N et al.Effect of repetitive corrugation and straightening on Al and AI-0.25Sc alloy[J].Materials Letters,2008,62:301-304. |
| [5] | Shin DH.;Park JJ.;Kim YS.;Park KT. .Constrained groove pressing and its application to grain refinement of aluminum[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2002(1/2):98-103. |
| [6] | J.W. Lee;J.J. Park .Numerical and experimental investigations of constrained groove pressing and rolling for grain refinement[J].Journal of Materials Processing Technology,2002(0):208-213. |
| [7] | A. Krishnaiah;U. Chakkingal;P. Venugopal .Applicability of the groove pressing technique for grain refinement in commercial purity copper[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2005(0):337-340. |
| [8] | Krishnaiah A;Uday Chakkingal;Venngopal P .Production of uhrafine grain sizes in aluminium sheets by severe plastic deformation using the technique of groove pressing[J].Scripta Materialia,2005,52:1229-1233. |
| [9] | Park J J;Park N J .Influence of orhogonal shear on texture and R value in aluminum sheet[J].Journal of Materials Processing Technology,2005,169:299-307. |
| [10] | Shaw LL;Villegas J;Huang JY;Chen S .Strengthening via deformation twinning in a nickel alloy[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2008(1/2):75-83. |
| [11] | Y.S. Li;N.R. Tao;K. Lu .Microstructural evolution and nanostructure formation in copper during dynamic plastic deformation at cryogenic temperatures[J].Acta materialia,2008(2):230-241. |
| [12] | Ortiz A L;TIAN J W;Villegas J C et al.Interrogation of the microstructure and residual stress of a nickel-bnse alloy subjected to surface severe plastic deformation[J].Acta Materialia,2008,56:413-426. |
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