Theoretical Investigation of Stabilizing Mechanism by Boron in Body-Centered Cubic Iron Through (Fe,Cr) 23 (C,B) 6 Preci

  • PDF / 2,117,344 Bytes
  • 11 Pages / 593.972 x 792 pts Page_size
  • 85 Downloads / 139 Views

DOWNLOAD

REPORT


INTRODUCTION

HIGH-CR ferritic heat-resistant steels have been used for the main steam pipes in thermal power plants. However, the conditions are far harsher in advanced ultra-supercritical (A-USC) power generation systems. In A-USC systems, high-temperature parts will be made of Ni-based alloys, such as Alloy 617, Alloy 263, HR6W and HR35, because the steam is at 973 K (700 °C) and 35 MPa. The lower-temperature parts at