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ENG1050/MCD4220 Engineering Materials Semester 1 2014 Assignment 30 marks (10%) Due date is: 11.55pm (Melbourne Time) Thursday 15 May Clayton Campus: To be submitted in the Moodle Dropbox - Clayton Campus Sunway Campus: To be submitted in the Moodle Dropbox - Sunway Campus To help us mark your assignment, please include your name, student ID number, demonstrator’s name, and your lab session time on the front page. Make sure to tick “agree” in the “Cover Sheet Declaration” in Moodle, which confirms that the work is yours alone. This is an individual assignment. All references of other work should be appropriately acknowledged. See http://www.adm.monash.edu.au/unisec/academicpolicies/policy/plagiarism.html for further details. References should be American Institute of Physics (AIP) Referencing Style: http://guides.lib.monash.edu/content.php?pid=346637&sid=2835486 This assignment will be screened for plagiarism using Turnitin. You must submit your assignment as a Word document. ___________________________________________________________________ This assignment is designed for you to gain a greater appreciation of corrosion in engineering and its impact on society. Your task is to find a metal structure that is corroding either on the Clayton or Sunway campus (note that here “metal” also includes metal alloys). There are no restrictions on what the corroding structure is, just as long as it is currently in use (not rubbish) and is the property of the University. Once you have selected your corrosion case study, write a report with the following headings, which answer each of the questions below. Your report must be a maximum of four A4 pages, 12 size font, including pictures and references. You will not necessarily be penalised for submitting a report less than 4 pages – just as long as you answer the questions adequately. Q1. Identification of component/structure and its environment [11 marks] i) Describe the corroding structure – its state and condition, with the help of a photograph and identify its location on campus (the photograph is required in your report). Is it located outdoors or indoors? [1 mark] ii) What is the function of the structure? [1 mark]

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iii) Describe the immediate environment of the structure. [1 mark] iv) Using the CES Edu Pack (Level 2 Database), make a suggestion of what the corroding metal/alloy could be. [2 marks] (v) Discuss why the metal/alloy was selected for this particular application. [2 marks] (vi) Suggest a possible processing method used in the manufacture of the material/ structure. [2 marks] (vii) Suggest an alternative material for the structure [2 marks] [Hint: also use the internet and/or textbooks to check if the metal is typically used for this application. Please reference these sources of information at the end of your assignment.] Q2. Description of the corrosion process [6 marks] i) Using knowledge gained from the course lectures/tutorials/labs, discuss the possible types of corrosion processes and explain the reasons for your assessment. Explain why multiple mechanisms (and not single forms) of corrosion generally occur in practice. [4 marks] ii) Draw a picture to help illustrate the multiple corrosion processes taking place. [2 marks] Q3 Corrosion prevention [6 marks] i) In your opinion, was corrosion taken into consideration in the design of and material selection for the structure? Explain your reasons. [2 marks] ii) What type of corrosion prevention system was initially implemented and why is it failing? [2 marks] iii) Discuss why this particular corrosion prevention process was implemented. [2 marks] Q4 Corrosion assessment and recommendations [7 marks] i) Taking into consideration the potential risks to people and other assets of the University suggest whether the corrosion of the structure should be monitored? If so, propose a monitoring protocol and schedule. [2 marks] ii) Make an assessment of the potential remnant life time of the structure, keeping in mind the geographic and climatic conditions. [2 mark] What would be your recommendations (consider materials, design solutions, etc) to the University if the lifetime of the structure were to last [1 mark each]

a) 5 years b) 20 years c) 50 years