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1 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 | N O V E M B E R / D E C E M B E R 2 0 2 1 3 5 MINIMIZING DISTORTION DURING GAS QUENCHING, PART I Justin Sims, Zhichao (Charlie) Li, and B. Lynn Ferguson A newmethod to control distortion in difficult-to-quench geometries addresses the nonuniformcooling inherent inmost gas quenching processes. EDITORIAL OPPORTUNITIES FOR HTPro IN 2022 The editorial focus for HTPro in 2022 reflects some key technology areas wherein opportunities exist to lower manufacturing and processing costs, reduce energy consumption, and improve performance of heat treated components through continual research and development. March Testing & Control July/August Thermal Processing in On/Off Highway Applications November/December Atmosphere & Vacuum Heat Treating To contribute an article to an upcoming issue, contact Vicki Burt at vicki.burt@ asminternational.org. To advertise, contact kelly.johanns@ asminternational.org. DEPARTMENTS 1 2 | EDITORIAL 14 | HEAT TREATING SOCIETY NEWS ABOUT THE COVER Microstructure of a carburized coupon processed using DANTE controlled gas quenching. Courtesy of DANTE Solutions Inc. CASE STUDY: CONTROLLING THE DISTORTION OF A CROWN WHEEL (HYPOID GEAR) Yathish Rao This study looks at whether adding an annealing step to the heat treating process has an effect on residual stress and distortion on hypoid gear sets. EDITOR Victoria Burt TECHNICAL ADVISORS HTS R&D Committee PRODUCTIONMANAGER Madrid Tramble NATIONAL SALESMANAGER Kelly Johanns 440.318.4702 kelly.johanns@asminternational.org HEAT TREATINGSOCIETY EXECUTIVE COMMITTEE Lesley Frame, President Eric L. Hutton, Immediate Past President Benjamin Bernard, Vice President HTPro is published quarterly by ASM International®, 9639 Kinsman Road, Materials Park, OH 44073, 440.338.5151, asminternational.org. Vol. 9, No. 3, Copyright ©2021 by ASM International®. All rights reserved. The acceptance and publication of manuscripts in HTPro does not imply that the editors or ASM International accept, approve, or endorse the data, opinions, and conclusions of the authors. Althoughmanuscripts published in HTPro are intended to have archival significance, authors’ data and interpretations are frequently insufficient to be directly translatable to specific design, production, testing, or performance applications without independent examination and verification of their applicability and suitability by professionally qualified personnel. 12 6