Lecture 8 - ENGR 4250 Advanced Materials Engineering...

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Unformatted text preview: ENGR 4250 Advanced Materials Engineering Lecture 8 Testing of Materials Metallic Alloys Dr. A. Keshavarz - ENGR 4250U ex: hardness vs structure of steel Properties depend on structure Data obtained from Figs. 10.30(a) and 10.32 with 4 wt% C composition, and from Fig. 11.14 and associated discussion, Callister 7e . Micrographs adapted from (a) Fig. 10.19; (b) Fig. 9.30;(c) Fig. 10.33; and (d) Fig. 10.21, Callister 7e . ex: structure vs cooling rate of steel Processing can change structure Structure, Processing, & Properties Hardness (BHN) Cooling Rate (C/s) 100 200 300 400 500 600 0.01 0.1 1 10 100 1000 (d) 30 m (c) 4 m (b) 30 m (a) 30 m Dr. A. Keshavarz - ENGR 4250U ASTM ASTM International (American Society for Testing and Materials International) is one of the largest voluntary standards development organizations in the world Founded in 1898: American Society for Testing and Materials Rail breaks 2001 ASTM International Dr. A. Keshavarz - ENGR 4250U ASTM ANSI (1918: AESC) National body ISO & IEC BSI (1901), DIN (1917) DIN476 AFNOR (1926), JIST Dr. A. Keshavarz - ENGR 4250U www.astm.org. ASTM International is a not-for-profit organization that provides a global forum for the development and publication of voluntary consensus standards for materials, products, systems and services. ASTM standards are accepted and used in research and development, product testing, quality systems, and commercial transactions around the globe....
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This note was uploaded on 06/02/2011 for the course ECONMICS ECN204 taught by Professor Brenan during the Spring '08 term at Ryerson.

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Lecture 8 - ENGR 4250 Advanced Materials Engineering...

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