Mechanical Properties Of Pack Carburized AISI 4340 With Variation Energizer Composition of Barium Carbonate (BaCO3) And Sodium Carbonate (Na2CO3)

<div><table cellspacing="0" cellpadding="0" align="right"><tbody><tr><td align="left" valign="top"><p>The aim of this research was to determine the mechanical strength AISI 4340 steel after pack carburizing with variation barium carbonate (BaCO<sub>3</sub>) and sodium (Na<sub>2</sub>CO<sub>3</sub>) as energizer. The various ratios energizer: 40/60, 50/50 60/40 w/w%. Mechanical test conducted tensile (ASTM E-8), impact charpy E-23), rockwell hardness number E-18) microstructure characterization E-3). Both type specimens were temperature carburized is 950ºC holding time 3 hours. Results showed that specimen C has a lowest ultimate mean values than other specimens, which 333.43±30.22 MPa. results energy value found in C, 4.32 joules highest without treatment, 15.80 joules. Based on microscope observation indicated martensite structure increase influenced by phase, compared 80.70 HRC while untreated 56.90 HRC.</p></td></tr></tbody></table></div>