Yiyu Wang tests materials (IMAGE) DOE/Oak Ridge National Laboratory Caption Yiyu Wang, a scientist in Feng’s group, tests and characterizes materials to determine how welding affects microstructure. His work proves the weld wire lowers stresses. Credit Carlos Jones/ORNL, U.S. Dept. of Energy Usage Restrictions none License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.