Metal powder, method of producing additively-manufactured article, and additively-manufactured article
A metal powder contains not less than 0.10 mass % and not more than 1.00 mass % of at least one of chromium and silicon, and a balance of copper. The total content of the chromium and the silicon is not more than 1.00 mass %. In accordance with an additive manufacturing method for this metal powder, an additively-manufactured article made from a copper alloy is provided. The additively-manufactured article has both an adequate mechanical strength and an adequate electrical conductivity.
1. An additively-manufactured article made from a copper alloy, the copper alloy consisting of:
not less than 0.10 mass % and not more than 1.00 mass % of at least one of chromium and silicon, a total content of the chromium and the silicon being not more than 1.00 mass %; and
a balance of copper,
an element besides the copper, the chromium, and the silicon being less than 0.10 mass %,
the additively-manufactured article having a relative density of not less than 96% and not more than 100% with respect to a theoretical density of the copper alloy, and
the additively-manufactured article having an electrical conductivity of not less than 26% IACS.
2. The additively-manufactured article according to claim 1 , wherein
the copper alloy is a chromium-containing copper alloy comprising:
not less than 0.10 mass % and not more than 0.60 mass % of the chromium; and
a balance of the copper,
the additively-manufactured article has a relative density of not less than 96% and not more than 100% with respect to a theoretical density of the chromium-containing copper alloy, and
the additively-manufactured article has an electrical conductivity of not less than 30% IACS.
3. The additively-manufactured article according to claim 1 , wherein
the copper alloy is a silicon-containing copper alloy comprising:
not less than 0.10 mass % and not more than 0.60 mass % of the silicon; and
a balance of the copper,
the additively-manufactured article has a relative density of not less than 96% and not more than 100% with respect to a theoretical density of the silicon-containing copper alloy, and
the additively-manufactured article has an electrical conductivity of not less than 26% IACS.
4. An additively-manufactured article made from a copper alloy, the copper alloy consisting of:
not less than 0.22 mass % and not more than 0.94 mass % of chromium;
not less than 98.0 mass % of copper; and
an impurity element,
the impurity element being an element besides the copper and the chromium,
the impurity element being less than 0.10 mass %.
5. The additively-manufactured article according to claim 4 , wherein the copper alloy comprises more than 0.51 mass % and not more than 0.94 mass % of the chromium.
6. The additively-manufactured article according to claim 4 , wherein the copper alloy comprises not less than 0.22 mass % and not more than 0.51 mass % of the chromium.
7. The additively-manufactured article according to claim 4 , wherein the copper alloy comprises not less than 98.5 mass % of the copper.
8. The additively-manufactured article according to claim 4 , wherein the copper alloy comprises not less than 99.0 mass % of the copper.