Strain Analysis of Initial Stage Sintering of 316L SS Three Dimensionally Printed (3DP#8482;) Components

摘要

This paper presents the results of our studies of initial stage sintering of stainless steel parts produced by Three-Dimensional Printing (3DP™). Presented results include experimental measurements of 3DP™ sample parts using a dilatometer to obtain in-sintering strain histories resulting from specified sintering temperature profiles. The effects of the heating rate on strain formation during non-isothermal and isothermal conditions are investigated. Isothermal results are compared with current isothermal strain models based upon the ideal two-particle model of initial stage sintering. Analysis of the dilatometer measurements indicate that the heating rate influences on isothermal strain formation is not addressed by current models. Heating intervals are found to produce significant amounts of strain relative to isothermal strain formation. Strain results and discussion of dilatometer experiments are presented.