Effect of B_(4)C on strength coefficient,cold deformation and work hardening exponent characteristics of Mg composites  

作　　者：S.Suresh M.Navaneetha Krishnan S.C.Vettivel 

机构地区：[1]Department of Mechanical Engineering,University College of Engineering,Nagercoil,Tamilnadu,India,Pin:629004 [2]Department of Mechanical Engineering,Universal College of Engineering and Technology,Vallioor,Tamilnadu,India,Pin:627117 [3]Department of Mechanical Engineering,Chandigarh College of Engineering and Technology,Chandiagarh 160019,India

出　　处：《Journal of Magnesium and Alloys》2022年第5期1381-1400,共20页镁合金学报（英文）

摘　　要：The emphasis of this exploration was to examine the workability and work hardening performance of Mg(Magnesium)specimen and Mg-B_(4)C composites created via the powder metallurgy technique.The pure Mg and Mg-B_(4)C composites are made with distinct weight percentages(Mg-5%B_(4)C,Mg-10%B_(4)C,and Mg-15%B_(4)C)at the unit aspect ratio.The powders and composites characterization are executed by SEM(Scanning Electron Microscope),EDS(Energy Dispersive Spectrum)with an elemental map,and XRD(X-ray Diffraction)examination.It displays that,the B_(4)C particles were dispersed consistently with the Mg matrix.The workability and work hardening examination was conducted in triaxial stress conditions using the cold deformation process.The consequence of workability stress exponent factor(β_(σ)),distinct stress proportion factors(σ_(m)/σ_(eff)and σ_(θ)/σ_(eff)),instantaneous work hardening exponent(n_(1)),work hardening exponent(n),coefficient of strength(k)and instantaneous coefficient of strength(k_(1))are recognized.The outcome displays that Mg-15%B_(4)C specimen has greater workability and work hardening parameter,initial relative density,and triaxial stresses compared with the Mg specimen and Mg-(5–10%)B_(4)C composites.

关 键 词：Powder metallurgy Cold deformation WORKABILITY Instantaneous work hardening exponent Workability stress exponent Triaxial stress 

分 类 号：TB333[一般工业技术—材料科学与工程]