There are several alloys that have both high hardness and good toughness. Here are some examples:
1、Stainless steel: It is an alloy of iron, carbon, and chromium. Stainless steel is known for its corrosion resistance and high strength.
2、Titanium alloys: These alloys are made up of titanium and other elements such as aluminum, vanadium, and molybdenum. Titanium alloys are lightweight and have excellent strength and toughness.
3、Inconel: It is a nickel-chromium alloy that has excellent strength, toughness, and corrosion resistance.
4、Maraging steel: It is a low-carbon, high-alloy steel that contains elements like nickel, molybdenum, and titanium. Maraging steel has high hardness and toughness.
5、Aluminum-lithium alloys: These alloys are made up of aluminum and lithium. They are lightweight and have high strength and stiffness.
6、Cobalt-chromium alloys: These alloys are used in medical implants due to their excellent biocompatibility, wear resistance, and strength.
7、Magnesium alloys: Magnesium alloys are lightweight and have high strength and toughness. They are used in various applications such as automotive components and aerospace industry.