654877bd_erials_Science_and_Engineering__Significance
[Date] 1935 [Candidate Moment] Erich Schmid and Walter Boas publish Kristallplastizitaet, which details 15 years of research on plastic deformation of metallic single crystals. [Significance] 
Leads to a much better understanding of plastic deformation, a critical property of metals.
Greatest Moments in Materials Science and Engineering
Significance