For those who study materials, the name "martensite" is so well-known that how many people know about Adolf Martens? In fact, the "horse" of martensite refers to him. There are still many organizations named after people in the iron carbon organization, and today we will talk about these names and the stories of the material ancestors behind them.

Martensite, as mentioned earlier, is named after Adolf Martens (1850-1914). This gentleman, known as Madens or Martens, is a German metallurgist. He worked as an engineer in the construction of railway bridges in his early years and was exposed to the emerging material inspection methods. So he used a self-made microscope to observe the metallographic structure of iron, and published "Microscopic Study of Iron" in 1878, explaining the morphology of metal fractures and the metallographic structure after polishing and acid leaching. (We seem to be doing quite a lot of this work now.) He observed that the organization arrangement of pig iron during cooling and crystallization is very regular (probably including martensite), and predicted that microscopic research will become one of the most useful analysis methods (with foresight). He also served as the director of the Mechanical Technology Research Institute affiliated with the Royal University of Berlin, the predecessor of the 'Staatliche Materialpr ü fungsamt' in Berlin, where he established a first-class metallographic laboratory. In 1895, the International Society for Testing and Materials was established, and he served as Vice Chairman. Until now, there is still a prestigious award named after him in Germany.