assignment is related to transmission electron microscopy[TEM] i need assignment to be done with proper plagirisim report
MTE4598TEMlaboratory 1 MTE 4598 – TEM Assignment (due 5pm Wednesday 30th May 2018) Background: In one of your first jobs as a materials consultant, you are approached by Airbus. They have just taken delivery of bulk quantities of various aluminium alloys used in the production of the A380, but somewhere along the way, there has been a major mix-up and the identity of one of the batches of alloy has been lost in the system. There is now a huge quantity of material sitting in storage because the production engineers have no immediate means of identifying which alloy it is and therefore, which components in the airframe the alloy is destined for. The only piece of information they can give you is that alloy 2050 has not yet been delivered due to delays in its production and is therefore known not to be in stock. Airbus has also provided a list of possibilities as summarised by the alloy distribution diagram of figure 1. Figure 1: A pictorial summary of where different aluminium alloys are used in the Airbus A380 [1]. To tackle this problem, you arranged for a small sample from the batch of unknown aluminium alloy to be examined at the Monash Centre for Electron Microscopy (MCEM). Your contact there (Phil Nakashima) used the JEOL 2100F FEGTEM over an 8-hour period and performed the following microscopy: • Low to medium magnification dark and bright field imaging and selected area diffraction. • High resolution imaging of the aluminium matrix and additional phases observed previously at the lower magnifications. • Structural symmetry analysis by convergent beam electron diffraction (CBED). Your contact, Phil, sent you the key images and diffraction patterns that will allow you to determine the identity of the alloy and he videoed the TEM session in its various stages so that you could verify exactly what was done to gather the required information. 2 Your task is to use the data and present a comprehensive analysis in the form of a report to Airbus that unequivocally identifies the alloy ID number in question. Show all reasoning, numerical and quantitative analysis, logical sequence of deductions based on appropriate evidence that lead you to your conclusion. The videos that Phil has provided will be of some assistance in explaining the relationships of the different data to one another. IMPORTANT NOTE: A supplementary image of a CBED pattern that Phil collected separately along the [1 1 1] direction in the aluminium matrix is included in the folder with all of the data. This was not shown in the video as it required a separate TEM session. Phil has advised you that this CBED pattern is indispensable in making the full and unequivocal identification of the alloy. References and Recommended Resources: [1] P. Lequeu, P. Lassince, T. Warner, “Aluminium Alloy Development for the Airbus A380 – Part 1 & 2”, in Advanced Materials and Processes (June 2007), 33-44. [2] I.J. Polmear, Light Alloys: From Traditional Alloys to Nanocrystals (4th Ed Butterworth- Heineman, 2017). [3] S.C. Wang, M.J. Starink, Int. Mater. Rev. 50 (2005), 193-215. [4] B.C. Muddle, I.J. Polmear, Acta Metall. 37(3) (1989), 777-789. [5] Aluminium Teal Sheets – Download from Moodle. Microsoft Word - 1_Teal Sheet -Clean Copy of Working Document -REVISION TO 2009- December 18 2014.doc International Alloy Designations and Chemical Composition Limits for Wrought Aluminum and Wrought Aluminum Alloys 1525 Wilson Boulevard, Arlington, VA 22209 www.aluminum.org With Support for On-line Access From: Aluminum Extruders Council Australian Aluminium Council Ltd. European Aluminium Association Japan Aluminium Association Alro S.A, Romania Revised: January 2015 Supersedes: February 2009 © Copyright 2015, The Aluminum Association, Inc. Unauthorized reproduction and sale by photocopy or any other method is illegal. Use of the Information The Aluminum Association has used its best efforts in compiling the information contained in this publication. Although the Association believes that its compilation procedures are reliable, it does not warrant, either expressly or impliedly, the accuracy or completeness of this information. The Aluminum Association assumes no responsibility or liability for the use of the information herein. All Aluminum Association published standards, data, specifications and other material are reviewed at least every five years and revised, reaffirmed or withdrawn. Users are advised to contact The Aluminum Association to ascertain whether the information in this publication has been superseded in the interim between publication and proposed use. CONTENTS Page FOREWORD ........................................................................................................... i SIGNATORIES TO THE DECLARATION OF ACCORD ..................................... ii-iii REGISTERED DESIGNATIONS AND CHEMICAL COMPOSITION LIMITS .... 1-14 Footnotes ........................................................................................................ 15 TABLE OF NOMINAL DENSITIES FOR ACTIVE ALLOYS ............................. 16-21 TABLE OF INACTIVE ALLOY DESIGNATIONS ............................................. 22-23 Table of Chemical Composition Limits for Inactive Original Alloys ............. 24-26 CROSS REFERENCES OF INTERNATIONAL DESIGNATIONS— DECLARATION OF ACCORD (DOA) TO ISO ..................................................... 27 RECOMMENDATION TO THE DECLARATION OF ACCORD ............................ 28 Footnotes ........................................................................................................ 29 Appendix A—Use and Assignment of Designations ......................................... 30 Appendix B—Deactivation of Registered Alloys ............................................... 30 Appendix C—General Guidelines for Determining Compliance with "Sale of Alloy" and "Commercial Quantity" for Purposes of Registering Wrought Aluminum and Wrought Aluminum Alloys ......................................................... 30 DECLARATION OF ACCORD .............................................................................. 31 i FOREWORD Listed herein are designations and chemical composition limits for wrought aluminum and wrought aluminum alloys registered with The Aluminum Association. Numerical designations are assigned in accordance with the Recommendation—International Designation System for Wrought Aluminum and Wrought Aluminum Alloys, which is printed on pages 28 through 30. Additions may be made