Delayed Fracture and Thermomechanical Control Process
Dr. Fukukazu Nakasato
Chongqing University of Science and Technology
Date & Time
Monday, 12 August 2019
Room 7-37, Haking Wong Building, HKU
"Delayed Fracture" is closely related to the performance of high -strength steel products used in various environments in the market. Typical hydrogen-induced in-service failure is delayed fracture of high strength bolts. The speaker describes his R&D work to fight against this fracture. "TMCP or thermo-mechanical control process" is the production technology which can achieve attractive cost savings and/or better-than-ever properties of various steel products. An example of TMCP technology successfully applied to high-performance re-bar production will be introduced. Throughout his speech, the speaker will outline how he got involved in these R&D subjects, his successes and failures, and the desirable R&D engineer's mindset, etc. He will also refer to the future outlook on the above subjects.
Dr. Fukukazu Nakasato worked for Sumitomo Metal Industries, Co. Ltd (SMI) in Japan for almost 43 years (April, 1975~August, 2012). His duty covered R&D on long products, materials testing and evaluation, customer service to major Japanese automobile companies, and education of young engineers of SMI, its subsidiary companies, and its customers. Among many R&D areas he got involved in, two major subjects are hydrogen-induced delayed fracture and TMCP. These two are industrially very important even today. Dr. Fukukazu Nakasato is an Adjunct Professor at Chongqing University of Science and Technology, China.