6061-T6铝合金疲劳曲线.pdfVIP

FATIGUE DESIGN CURVES FOR 6061-T6 ALUMINUM* G. T. Yahr Engineering Technology Division Oak Ridge National Laboratory Oak Ridge, Tennessee 37831-8051 ABSTRACT A request has been made to the ASME Boiler and Pressure Vessel Committee that 6061-T6 aluminum be approved for use in the construction of Class 1 welded nuclear vessels so it can be used for the pressure vessel of the Advanced Neutron Source research reactor. Fatigue design curves with and without mean stress effects have been proposed. A knock-down factor of two is applied to the design curve for evaluation of welds. The basis of the curves is explained. The fatigue design curves are compared to fatigue data from base metal and weldments. DISCLAIMER This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsi- bility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Refer- ence herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recom- mendation, or favoring by the United States Government or any agency thereof. The views and opinions of authors expressed herein do not necessarily state or reflect those of the United States Government or any agency thereof. I Prepared by the OAK RIDGE NATIONAL LABORATORY, Oak Ridge, Tennessee 37831; managed by MARTIN MARIETTA ENERGY SYSTEMS, INC., for the U.S. DEPARTMENT OF ENERGY under suknined mnuscrgt has authored by a tontractor of the U.S. GW4mWlt under Contract No. DE- ~~05-840~21400 . ~ c c o t ~ . the U.S. Government rstahrr a mXdupive. royslty-hee Eanw, to pa~sh the pasjhed fm o