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Hot deformation of copper chromium experimental study of flow stress


Coefficient. Table 1,[link widoczny dla zalogowanych], the flow stress temperature range of mathematical models of regression coefficient,[link widoczny dla zalogowanych], copper chromium species u0UlU2U3U4u5U6 type 550 ≤ t <75oA1O. 2214-5.3209o. 5874 a O. 4734 a O. 56021.1938-0.8493 Copper 750 ≤ t ≤ 800A3.8l6 '13406 - 0 .46020.5444 - 1 .06270.6752 - 0 .26334.4 flow stress curve A mathematical model based on flow stress and the expression The regression coefficient, Cr, Cu, this thread out of the deformation at different temperatures, different strain rate under different flow stress deformation curve (see Figure 5- 3 Fan Bailin et al: Thermal deformation of the flow stress of copper chromium experimental study , 23l2 bleed at the nose strike three 240 m2 ∞ l8u frog l6. 140t2OlO. s060lo blue fin Figure 5 Vb be the flow stress curves of Cr, Cu, Fig. 5Flowstressofchromcopper deformation e Figure 7 chrome pot flow stress curve Fig. 7Flowstressofchromcopper. 5 Conclusion to training ub b Chong Chiang frog Artemisia Figure 6 the flow stress curves of Cr, Cu, Fig. 6Flowstressofchromcopper deformation e Figure 8, Cr, Cu the flow stress curve Fig. 8Flowstressofchromcopper. 1) deformation temperature 550C ≤ t ≤ 800C, the chromium copper thermoplastic flow stress model using the text as shown in model fitting the experimental data in high accuracy and smaller variance. 2) The deformation rate on the flow stress relationship, the need to consider deformation temperature influence on the deformation rate index, that is, (), one (D) deformation temperature, strain rate flow stress of the impact of the interaction. 3) Strain on the flow stress coefficients, taking into account the degree of deformation temperature on deformation of the impact that a-f · (cn), where a (D). Deformation temperature, deformation degree of interaction between the effect of flow stress. 4) The experimental study of high temperature and high return of income under the formula of flow stress model, and the flow stress curve provided by the Mechanical Engineering 8, 3 reel, the pressure on the non-ferrous metal processing engineering calculations and computer-controlled production of a rolling guide. Zhou Jihua. Tube Ke Zhi, Liu million tube Ke Zhi Wu Jigeng with references. Resistance to plastic deformation of Machinery Industry Press, 19899 Zhou Jihua, Lun Yi Xin. Under high temperature and high-speed steel, bearing steel, spring steel deformation resistance research. Beijing University of Technology, 1988.9 statistical analysis of experimental data and computer processing of Chinese Science and Technology Press, 1989.6 practical numerical methods and procedures. Metallurgical Industry Press, 1991.5FL0WSTRESS0FCHR0MC0PPERATH0TDEF0RMAT10NFanBai】 inGuanKezhiZhouJihua (UniversityofScience8,-TechnologyBeijing100083) AbstractThispaperstudiesthe / lowstressofehromcopperbyexperimentwiththecamp [astometerataconstantdeformatingrate, andana [ysestheeffeets0fflowstressunderdifferentdeformationtemperatures, diHerentdeformationratesanddiiierentdeiormationdegrees. AttheSarcletimetnon-linearregressiontomathematica [modelsofdifferentstructurewereconducted. Throughanalysisandcomperision, mathematicalmodelwithhigherfittingaccuracywasproposed. Keywordschromcopper, flowstress, tr ~ thematica [models, camptastometer

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