Resources Contact Us Home
Method of an ultra-short femtosecond pulse and KW class high average-power laser for preventing cold-worked stress corrosion cracking in iron steels and alloyed steels including stainless stee

Image Number 4 for United States Patent #7651576.

The method of preventing cold-worked stress corrosion cracking in the iron steels and alloyed steels including stainless steels comprises removing a residual tensile stressed layer, optionally generating residual compression, through the impact of irradiation with the ultra-short femtosecond pulse and kW class high average-power laser, and removing a hardened surface layer extremely susceptible to stress corrosion cracking, whereby this susceptible hardened surface layer with many concentrated dislocation defects and the likes is removed without generating or introducing any of such hardened layer in the process of its removal. The method is free from the risk of damaging other equipment by peening with steel balls or other shaped shots, is almost unlimited in actual environment, effectiveness, work, place and other conditions for application, is inexpensive, and functions continuously for a much longer period than an ordinary nuclear reactor's service lifetimes.

  Recently Added Patents
Heap/stack guard pages using a wakeup unit
Encoder that detects positional information of a moving body generating interference fringes that move in opposite directions
Varying latency timers in a wireless communication system
Automobile body
Biphotonic photosensitizers, nanoparticles containing the same and their use as drugs
Thermosensitive recording medium
Personalized location information for mobile devices
  Randomly Featured Patents
Magnetic sensor for detecting position and/or speed of a mobile target
Heterojunction bipolar transistor
Flexible container with a sealable closure
Shoe ventilating insole
Wafer-interposer using a ceramic substrate
Process for the preparation of unsaturated alcohols and/or esters thereof
Fault testing for interconnections
Method for producing diodes
Method for forming thin film
Bubble collection type gas electrode