THE effect known as the Widmanstatten structure is shown most clearly in those meteoric nickel-iron alloys in which the percentage of nickel lies between certain limits, roughly, from 7 to 14.

Microstructural analysis of this forged iron structure revealed an extraordinary convergence of properties that resulted in ...

Iron-sulfur clusters have critical roles in proteins from diverse organisms and in a broad range of biological processes. Recent discoveries raise exciting challenges for future research by ...