A cutting tool includes a cemented carbide substrate. The cemented carbide consists of hard constituents in a metallic binder. The hard constituents include WC. The WC content in the cemented carbide is 80-93 wt %. The cemented carbide has Ni and Al, and a Ni content of 3-13 wt %, a weight ratio of Co/Ni<0.33, a weight ratio of Fe/Ni<0.25, a weight ratio of Cr/Ni<0.25 and a weight ratio of 0.02<Al/(Ni+Co+Fe)<0.1. The crack resistance W is defined as the ratio of the load applied on a Vickers hardness indentation and the total crack length of the cracks formed at the corners of the Vickers hardness indentation. The product of the hardness H(rake) at the rake face and the crack resistance W(rake) at the rake face is H(rake)*W(rake)>5000 HV100*N/μm.

A cutting tool includes a cemented carbide substrate. The cemented carbide consists of hard constituents in a metallic binder. The hard constituents include WC. The WC content in the cemented carbide is 80-93 wt %. The cemented carbide has Ni and Al, and a Ni content of 3-13 wt %, a weight ratio of Co/Ni<0.33, a weight ratio of Fe/Ni<0.25, a weight ratio of Cr/Ni<0.25 and a weight ratio of 0.02<Al/(Ni+Co+Fe)<0.1. The crack resistance W is defined as the ratio of the load applied on a Vickers hardness indentation and the total crack length of the cracks formed at the corners of the Vickers hardness indentation. The product of the hardness H(rake) at the rake face and the crack resistance W(rake) at the rake face is H(rake)*W(rake)>5000 HV100*N/μm.

The invention relates to a cemented carbide composition producing method for precious metal, which includes a titanium nitride component contained therein and shows excellent workability, corrosion resistance, reduction in weight and other desirable mechanical properties, as well as the low amount of nickel used as a metallic binder and an aluminum oxide coating helps to suppress potential negative skin reactions.

The invention relates to a cemented carbide composition producing method for precious metal, which includes a titanium nitride component contained therein and shows excellent workability, corrosion resistance, reduction in weight and other desirable mechanical properties, as well as the low amount of nickel used as a metallic binder and an aluminum oxide coating helps to suppress potential negative skin reactions.

The present disclosure discloses a preparation method of a multi-functional marine engineering alloy. Through the coupling of a multi-principal alloy structure, structural entropy, and temperature and powder metallurgy and heat treatment, mutual solubility between elements and free energy of an alloy system are regulated, Cu grain boundary segregation is eliminated, and uniform and dispersed nano-precipitation of the anti-fouling element Cu in corrosion-resistant and high-plasticity multi-principal alloys is realized. The preparation method is simple and controllable to operate, and the prepared material has plasticity higher than 75%, high yield strength, excellent corrosion resistance and anti-fouling property, and has important application prospects in the field of marine engineering.

The present disclosure discloses a preparation method of a multi-functional marine engineering alloy. Through the coupling of a multi-principal alloy structure, structural entropy, and temperature and powder metallurgy and heat treatment, mutual solubility between elements and free energy of an alloy system are regulated, Cu grain boundary segregation is eliminated, and uniform and dispersed nano-precipitation of the anti-fouling element Cu in corrosion-resistant and high-plasticity multi-principal alloys is realized. The preparation method is simple and controllable to operate, and the prepared material has plasticity higher than 75%, high yield strength, excellent corrosion resistance and anti-fouling property, and has important application prospects in the field of marine engineering.

An R-T-B-based sintered magnet and a preparation method therefor. The R-T-B-based sintered magnet comprises: R, B, Ti, Ga, Al, Cu, and T. The contents thereof are as follows: R is 29.0-33%; the content of B is 0.86-0.93%; the content of Ti is 0.05-0.25%; the content of Ga is 0.3-0.5%, but not 0.5%; the content of Al is 0.6-1%, but not 0.6%; the content of Cu is 0.36-0.55%. The percentage is the mass percentage. Under the condition that no heavy rare earth is added or a small amount of heavy rare earth is added, by using a low B technology, not only the remanence performance of the R-T-B-based sintered magnet is improved, but also the coercivity and the squareness of the magnet are ensured.

A method is provided for producing metal hybrid graphene. The method includes providing a ball mill chamber filled with inert gas and metal balls; inserting graphene, nanographite, and nanosized transition metal; into the chamber; turning the chamber; and extracting the metal hybrid graphene. The transition metal is at least one of nickel, copper, cobalt, tungsten, iron, chromium and/or manganese.

This disclosure, and the exemplary embodiments provided herein, include AM processed Ti-MMCs reinforced with either aluminum oxide or tantalum pentoxide. According to an exemplary embodiment, composite feedstock powders of Ti-6Al-4V (Ti64) with 1% and 3% (by volume) reinforcements of either nano-Al.sub.2O.sub.3 or Ta.sub.2O.sub.5 are prepared by high energy ball milling and then 3-D printed using SLM.

This disclosure, and the exemplary embodiments provided herein, include AM processed Ti-MMCs reinforced with either aluminum oxide or tantalum pentoxide. According to an exemplary embodiment, composite feedstock powders of Ti-6Al-4V (Ti64) with 1% and 3% (by volume) reinforcements of either nano-Al.sub.2O.sub.3 or Ta.sub.2O.sub.5 are prepared by high energy ball milling and then 3-D printed using SLM.