Cuboidal and coherent precipitates form in ternary cobalt-aluminium‑tungsten systems and are described to increase high temperature toughness of superalloys for gas turbines. γ’ is a metastable phase in the form of Co₃(Al,W) which is stabilized by the substitution of cobalt with nickel. Strengthening of cobalt binder (γ) in cemented carbides by precipitation hardening is of interest as it potentially increases hardness and wear resistance without sacrificing tensile strength or toughness of the composite materials. Infiltration of preliminary produced cobalt-base and cobalt‑nickel-base superalloys into tungsten carbide powder beds yielded a γ/γ’ binder microstructure. It was shown that nickel stabilizes the γ’ phase in superalloys as well as in cemented carbides, but carbon may lead to the formation of an additional κ phase with E2₁ structure.

在三元钴-铝-钨系统中形成立方体和连贯沉淀物，并被描述为提高燃气轮机高温合金的高温韧性。γ' 是 Co ₃形式的亚稳态相(Al,W) 通过用镍取代钴来稳定。通过沉淀硬化强化硬质合金中的钴粘合剂 (γ) 是令人感兴趣的，因为它可能在不牺牲复合材料的拉伸强度或韧性的情况下提高硬度和耐磨性。将初步生产的钴基和钴镍基高温合金渗透到碳化钨粉末床中，产生了 γ/γ' 粘结剂微观结构。结果表明，镍使高温合金和硬质合金中的 γ' 相稳定，但碳可能导致形成具有 E2 ₁结构的附加 κ 相。