名詞 martensite:

1. a solid solution of carbon in alpha-iron that is formed when steel is cooled so rapidly that the change from austenite to pearlite is suppressed; responsible for the hardness of quenched steel

mar.ten.site

n.（名詞）
A solid solution of iron and up to percent of carbon, the chief constituent of hardened carbon tool steels.
馬氏本，馬登斯體：一種由鐵和高達百分之一的碳組成的溶液，是硬化碳工具鋼的主要成分

來源：
After Adolf Martens (850-94), German metallurgist
源自阿道爾夫 馬登斯 （850-94年）而命名，德國冶金學家

【引伸】
mar.tensit.ic