#7737. Comparison of the master sinter curves of water- and gas-atomized AISI 4340 low-alloy steel in binder jetting additive manufacturing

October 2026publication date
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Journal’s subject area:
Engineering (miscellaneous);
Industrial and Manufacturing Engineering;
Biomedical Engineering;
Materials Science (all);
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Abstract:
Master sinter curves (MSC) are empirically derived models used to predict bulk densification behavior of a powder-compact exposed to heat in a controlled nitrogen-hydrogen atmosphere. In this study, solid-state sintering MSC models were developed for two types of AISI 4340 powders: water-atomized and gas-atomized, which were deployed in binder jetting additive manufacturing. The models were constructed based on shrinkage measurements obtained through push-rod dilatometry.
Keywords:
Additive manufacturing; AISI 4340; Binder jetting; Gas-atomized powder; Low-alloy steel; Master sinter curve; Sintering; Water-atomized powder

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