A process for manufacturing an additively-manufactured part from a metal powder having a composition having the following elements, expressed in content by weight: 6%≤Ni≤14%, 5%≤Cr≤10%, 0.5%≤Si≤2.5%, 0.5%≤Ti≤2%, C≤0.04% and optionally containing 0.5%≤Cu≤2%, the balance being Fe and unavoidable impurities resulting from the elaboration, the metal powder having a microstructure including in area fraction more than 98% of a body-centered cubic crystalline phase, the process having a step during which at least a part of the metal powder is melted in an atmosphere substantially composed of an inert gas other than Argon or of a combination of inert gases other than Argon.

Methods of fabricating objects using additive manufacturing are provided. The methods create in situ dispersoids within the object. The methods are used with refractory alloy powders which are pretreated to increase the oxygen content to between 500 ppm and 3000 ppm or to increase the nitrogen content to between 250 ppm and 1500 ppm. The pretreated powders are then formed into layers in an environmentally controlled chamber of an additive manufacturing machine. The environmentally controlled chamber is adjusted to have between 500 ppm and 200 ppm oxygen. The layer of pretreated powder is then exposed to a transient moving energy source for melting and solidifying the layer; and creating in situ dispersoids in the layer.

Methods of fabricating objects using additive manufacturing are provided. The methods create in situ dispersoids within the object. The methods are used with refractory alloy powders which are pretreated to increase the oxygen content to between 500 ppm and 3000 ppm or to increase the nitrogen content to between 250 ppm and 1500 ppm. The pretreated powders are then formed into layers in an environmentally controlled chamber of an additive manufacturing machine. The environmentally controlled chamber is adjusted to have between 500 ppm and 200 ppm oxygen. The layer of pretreated powder is then exposed to a transient moving energy source for melting and solidifying the layer; and creating in situ dispersoids in the layer.

The presently disclosed subject matter relates to multi-material electrical contacts, and methods of making multi-material electrical contacts.

The presently disclosed subject matter relates to multi-material electrical contacts, and methods of making multi-material electrical contacts.

Described herein are embodiments directed to additive manufacturing (AM), including three-dimensional (3D) printing, of metal nitride ceramics. In some embodiments herein, AM may comprise powder bed fusion (PBF) techniques. Also described herein are metal nitride ceramic components formed by AM techniques and methods for forming metal nitrides capable of being used in AM processes.

The present invention relates to a Fe-based alloy for melt-solidification-shaping containing : 0.05 mass% ≤ C ≤0.25 mass%, 0.01 mass% ≤ Si ≤ 2.0 mass%, 0.05 mass% ≤ Mn ≤ 2.5 mass%, 2.5 mass% ≤ Ni ≤ 9.0 mass%, 0.1 mass% ≤ Cr ≤ 8.0 mass%, and 0.005 mass% ≤ N ≤ 0.200 mass%, with the balance being Fe and unavoidable impurities, and satisfying: 11.5 < 15C+Mn+0.5Cr+Ni < 20.

The present invention relates to a Fe-based alloy for melt-solidification-shaping containing : 0.05 mass% ≤ C ≤0.25 mass%, 0.01 mass% ≤ Si ≤ 2.0 mass%, 0.05 mass% ≤ Mn ≤ 2.5 mass%, 2.5 mass% ≤ Ni ≤ 9.0 mass%, 0.1 mass% ≤ Cr ≤ 8.0 mass%, and 0.005 mass% ≤ N ≤ 0.200 mass%, with the balance being Fe and unavoidable impurities, and satisfying: 11.5 < 15C+Mn+0.5Cr+Ni < 20.

A cermet, as a base, containing a plurality of hard particles and a bonded phase between the plurality of hard particles. Each of the plurality of hard particles, when viewed in cross section, includes a first region containing Ti, N, and C, and contains a titanium carbonitride phase as a main constituent. Each of the plurality of hard particles, when viewed in cross-section, includes a second region containing one or more metal elements selected from the group consisting of V, Nb, Ta, Cr, Mo, W, Co, and Ni in a larger amount than the first region. The content of the one or more metal elements in the second region is 9.5 mass % or more in a total amount. A cutting tool has a length extending from a first end to a second end, and includes a holder and the insert described above.

A cermet, as a base, containing a plurality of hard particles and a bonded phase between the plurality of hard particles. Each of the plurality of hard particles, when viewed in cross section, includes a first region containing Ti, N, and C, and contains a titanium carbonitride phase as a main constituent. Each of the plurality of hard particles, when viewed in cross-section, includes a second region containing one or more metal elements selected from the group consisting of V, Nb, Ta, Cr, Mo, W, Co, and Ni in a larger amount than the first region. The content of the one or more metal elements in the second region is 9.5 mass % or more in a total amount. A cutting tool has a length extending from a first end to a second end, and includes a holder and the insert described above.