Stainless steel alloy, turbocharger assembly formed therefrom, and method of manufacturing same

• Main Authors: RENOLD, PETER, CHINTALAPATI PRAVEEN KUMAR, KANNUSAMY RAMKUMAR
• Format: Patent
• Language: Chinese; English
• Published: 22.12.2023
• Subjects: ALLOYS; BLASTING; CHEMISTRY; ENGINE PLANTS IN GENERAL; FERROUS OR NON-FERROUS ALLOYS; HEATING; LIGHTING; MACHINES OR ENGINES IN GENERAL; MECHANICAL ENGINEERING; METALLURGY; NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES; STEAM ENGINES; TREATMENT OF ALLOYS OR NON-FERROUS METALS; WEAPONS

The invention relates to a stainless steel alloy, a turbocharger assembly formed from the stainless steel alloy, and a method of manufacturing the same. Disclosed is an austenitic stainless steel alloy comprising or consisting of, by weight, from about 23.0% to about 25.0% chromium, from about 8.5% to about 10.0% nickel, from about 4.0% to about 5.0% manganese, from about 0.8% to about 0.9% niobium, from about 0.5% to about 1.5% silicon, from about 0.35% to about 0.45% carbon, from about 0.2% to about 0.3% nitrogen, and the balance iron and inevitable/unavoidable impurities. The elements tungsten and molybdenum are excluded beyond the impurity level. A turbocharger turbine housing made of the stainless steel alloy and a method of making the same are also disclosed. The stainless steel alloy is suitable for use in turbocharger turbine applications at a temperature of up to about 1020 DEG C. 本发明涉及不锈钢合金、由该不锈钢合金形成的涡轮增压器组件及其制造方法。公开了奥氏体不锈钢合金，其按重量包含以下或由以下组成：约23.0％至约25.0％铬、约8.5％至约10.0％镍、约4.0％至约5.0％锰、约0.8％至约0.9％铌、约0.5