4 Editorial 5 Research Tracks 10 Machine Learning 6 Metals/Polymers/Ceramics 8 Testing/Characterization 11 Process Technology 12 Emerging Technology 55 Editorial Preview 55 Special Advertising Section 55 Advertisers Index 56 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 worldwide 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. 183, No. 4, MAY/JUNE 2025. Copyright © 2025 by ASM International®. All rights reserved. Distributed at no charge to ASM members 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. 19 METALLOGRAPHIC CHARACTERIZATION OF A DECAUVILLE NARROW-GAUGE RAIL Patricia Silvana Carrizo A study of a narrow-gauge rail used in agriculture in Argentina shows its chemical composition and suggests how it was processed. 23 FORENSIC METALLURGY IN ARCHAEOLOGY AND AEROSPACE Russell Wanhill The techniques used in forensic metallurgy investigations follow a similar protocol, whether the subject in question is a historical artifact or an aircraft component. 29 CASE STUDY STUDENTS FROM JAPAN AND FINLAND COLLABORATE ON STARTUP PROJECT Hidekazu Miura, Akiko Ogawa, Hideyuki Kanematsu, Koichiro Ogata, Liisa Lehtinen, Jani Pelkonen, and Juha Nurmio A unique collaboration between Japanese KOSEN and Turku University of Applied Sciences in Finland combines engineering and entrepreneurship. FEATURES MAY/JUNE 2025 | VOL 183 | NO 4 ADVANCED MATERIALS & PROCESSES | MAY/JUNE 2025 3 19 29 31 23 31 TECHNICAL SPOTLIGHT HARDNESS TESTERS: KNOW THE OPTIONS FOR BEST RESULTS Learn how to select the ideal hardness testing method for specific applications and utilize new efficiencies such as automation, digital systems, and data mobility.
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