#################################################### # Pete Jemian # requesting 1 days, at minimum=8 hours days # beamline 33BM, f' and f'' determination of 3d elements in Waspaloy by XAFS measurement # instrument 33BM-B XAFS #################################################### # top:/home/www/beamtime-requests/req00594.txt # UNICAT Member Beam Time Request #594 # created Mon Apr 19 17:04:06 CDT 2004 #################################################### beamline: 33BM collaboration: No collaborator_Jenia: ON contact: jemian@uiuc.edu days: 1 description: This request duplicates the content of UNICAT request 559. It is desired to calculate the anomalous dispersion coefficients of nickel, cobalt, and iron in the Waspaloy samples presently being by anomalous USAXS on 33ID. One method to obtain these anomalous dispersion coefficients is to measure the absorption spectrum and use a Kramers-Kronig integral. [rest of this taken from an email from Pete to Jenia] It is only necessary to measure the absorption spectrum of one sample, by name, Waspaloy 1400F/630h from a series of heat treatments applied to a specific nickel-base superalloy called Waspaloy(tm) which is used as the turbine blade of jet aircraft engines. I am reasonably confident that this sample has a thickness less than 25 micrometers. Nominal composition and other useful information are given below, along with a WWW link to the manufacturer. 1. Could you please measure the absorption spectrum from 7 - 10 keV in 1 eV steps? I will need Over this range, I expect that you will find response at the Fe K edge (7112 eV), the Co K edge (7709eV), and the Ni K edge (8333 eV) with the Ni edge being the strongest reponse. 2. Could you also measure the empty instrument response over the same range from 7 keV to 10 keV? I do not need as many data points for this, a 10 or 20 eV step size would be just fine. Choose a reasonable counting time (1 sec/point). I need file(s) with at least energy, monitor, and detector counts. Other data in the file are OK but that is the information I will need for my analysis of the anomalous scattering factors. It's OK if you do this in pieces (it _is_ a large keV range) but please make sure the pieces have a reasonable overlap. Also, make sure that the scans do not start or end within 100 eV of these energies: 7709 eV and 8333 eV. Allvac Waspaloy® (UNS-N07001) http://www.allvac.com/allvac/pages/Nickel/UNSN07001.htm Composition Element wt% Al 1.40 B 0.01 C 0.05 Co 13.0 Cr 19.5 Fe 1.0 Mo 4.3 Ni balance Ti 3.0 Zr 0.07 Mechanical Properties Density lb/in3 (g/cm3) 0.296 (8.19) Metallurgical Condition 1,850 °F +age Tensile Strength, ksi (MPa) 185 (1,276) 0.2% Yield Strength, ksi (MPa) 130 (897) Elongation, % 23 Reduction in Area, % 25 Typical Hardness 38 HRC equipment_required: XAFS experiment: f' and f'' determination of 3d elements in Waspaloy by XAFS measurement foreign_nationals: hazards: none, samples are metal foils instrument: 33BM-B XAFS instrument_other: minimumdays: 8 hours name: Pete Jemian nonmembers: unacceptable_dates: July 17-22 (ACA meeting in Chicago) Aug 1-7 (Denver X-ray Conference) Aug 11-18 (vacation in New Hampshire) Aug 23-24 (NX School, USAXS) z34ID_details: #REMOTE_HOST: zrh.uni.aps.anl.gov #REMOTE_ADDR: 164.54.216.36 #CONTENT_LENGTH: 3380 #HTTP_REFERER: http://www.uni.aps.anl.gov/unireq.htm #HTTP_USER_AGENT: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.6) Gecko/20040113