3results about How to "Reduce Ni content" patented technology

The invention provides neodymium-containing high-corrosion-resistance laser cladding powder for a mining hydraulic oil cylinder and a cladding method, the neodymium-containing high-corrosion-resistance laser cladding powder comprises Nd2O3 powder and alloy powder, the mass percent of the Nd2O3 powder is 0.4%-1.0%, and the balance is the alloy powder; the alloy powder comprises the following components in percentage by mass: 19.2%-20.8% of Cr, 4.0%-8.0% of Ni, 0.3%-0.75% of Mn, 4.5%-8.5% of Mo, 0.04%-0.08% of C, 1.35%-1.52% of Si and the balance of Fe. In an inert atmosphere, the neodymium-containing high-corrosion-resistance laser cladding powder for the mining hydraulic oil cylinder is used for carrying out laser cladding on the outer surface of the mining hydraulic oil cylinder. The cladding method also has the advantages of moderate hardness, good wear resistance, strong purification capability and low hot crack sensitivity on the premise of ensuring that the cladding layer has better corrosion resistance.

The application belongs to the technical field of high-temperature metal alloy materials, and particularly relates to an AlCoCrFeNiMo high-entropy alloy and a preparation method and application thereof. The AlCoCrFeNiMo high-entropy alloy comprises, in atomic percentage, Al 19%-21%, Cr 19%-21%, Fe 14%-20%, Co 19%-21%, Ni 19%-20%, and Mo 1%-6%. The application improves the corrosion resistance of the AlCoCrFeNiMo high-entropy alloy in a high-temperature chlorine-containing atmosphere through the regulation of the Mo element, and is expected to be applied to a waste incinerator, a high-temperature equipment in a marine environment, coal-fired power generation and other high-temperature oxidation chlorine-containing atmosphere working conditions, thereby serving as a cost-reducing and benefit-increasing substitute product for the currently used high-cost Ni-based material.

The present invention discloses a B-containing high-strength stainless steel for highway guardrails and its preparation method, belonging to the technical field of stainless steel manufacturing processes; the chemical composition of the stainless steel is: 0.10% < C ≤ 0.18%; 0.35% ≤ Si ≤ 0.7%; 9% ≤ Mn ≤ 15%; 12.5% ≤ Cr ≤ 15%; 0.5% ≤ Ni < 1.0%; 0.2% ≤ N ≤ 0.3%; 0.4% ≤ Cu ≤ 1.0%; 0.004% ≤ B ≤ 0.010%; P ≤ 0.010%; S ≤ 0.010%, and the balance is Fe; the stainless steel is smelted from raw materials in a vacuum induction furnace, cast into an ingot, and then the ingot is subjected to homogenization, forging and rolling treatments; the stainless steel of the present invention has excellent mechanical properties and can meet the requirements of highway guardrail steel without subsequent heat treatment; when this material is applied to highway guardrails, its high yield strength, elongation and good corrosion resistance can achieve the lightweight of guardrail plates; it solves the problem that the mechanical properties and corrosion resistance of stainless steel for highway guardrails cannot be兼顾. It should be noted that the word "兼顾" in the original text might not be accurately translated as "兼顾" in the English version. A more appropriate expression could be "balanced" or "taken into account simultaneously". The above translation is for reference only, and you can adjust it according to the actual context and requirements.