4 Editorial 6 Research Tracks 7 Machine Learning 8 Metals/Polymers/Ceramics 10 Testing/Characterization 12 Sustainability 79 Editorial Preview 79 Special Advertising Section 79 Advertisers Index 80 3D PrintShop TRENDS INDUSTRY NEWS DEPARTMENTS Check out the Digital Edition online at asminternational.org/news/magazines/am-p ASM International serves materials professionals, nontechnical personnel, and managers wordwide by providing high-quality materials information, education and training, networking opportunities, and professional development resources in cost-effective and user-friendly formats. ASM is where materials users, producers, and manufacturers converge to do business. Advanced Materials & Processes (ISSN 0882-7958, USPS 762080) publishes eight issues per year: January/February, March, April, May/June, July/August, September, October, and November/December, by ASM International, 9639 Kinsman Road, Materials Park, OH 44073-0002; tel: 440.338.5151; fax: 440.338.4634. Periodicals postage paid at Novelty, Ohio, and additional mailing offices. Vol. 180, No. 5, JULY/AUGUST 2022. Copyright © 2022 by ASM International®. All rights reserved. Distributed at no charge to ASMmembers in the United States, Canada, and Mexico. International members can pay a $30 per year surcharge to receive printed issues. Subscriptions: $499. Single copies: $54. POSTMASTER: Send 3579 forms to ASM International, Materials Park, OH 44073-0002. Change of address: Request for change should include old address of the subscriber. Missing numbers due to “change of address” cannot be replaced. Claims for nondelivery must be made within 60 days of issue. Canada Post Publications Mail Agreement No. 40732105. Return undeliverable Canadian addresses to: 700 Dowd Ave., Elizabeth, NJ 07201. Printed by Publishers Press Inc., Shepherdsville, Ky. 19 ANCIENT IRON PRODUCTION AND PROCESSING IN THE OLD WORLD Omid Oudbashi, Ümit Güder, and Russell Wanhill A look at processing and production of iron during the Iron Age, 1200 to 500 B.C., including early unintentional forms of steel. 24 TECHNICAL SPOTLIGHT ADDITIVE MANUFACTURING PRESENTS NEW CHALLENGES FOR METAL COMPONENTS A look at how companies in regulated industries can test materials to produce higher quality metal components with additive manufacturing. 33 iTSSe The official newsletter of the ASM Thermal Spray Society (TSS). This timely supplement focuses on thermal spray and related surface engineering technologies along with TSS news and initiatives. FEATURES JULY/AUGUST 2022 | VOL 180 | NO 5 A D V A N C E D M A T E R I A L S & P R O C E S S E S | J U L Y / A U G U S T 2 0 2 2 3 19 49 33 24 49 HTPro The official newsletter of the ASM Heat Treating Society (HTS). This supplement focuses on heat treating technology, processes, materials, and equipment, along with HTS news and initiatives.
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