Zhili Feng designs weld wire (IMAGE) DOE/Oak Ridge National Laboratory Caption ORNL’s Zhili Feng designs weld wire to match or exceed strengths of various steel alloys. In a weld, it counteracts stress caused by stretching with stress caused by compression. 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.