February AMP_Digital

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 | F E B R U A R Y / M A R C H 2 0 1 9 5 3 HEAT TREATMENT OF ADDITIVELY MANUFACTURED METAL COMPONENTS AndrewWessman, Eric Ott, and Rajendra K elkar For partsm ade by direct metal laser melting, heat treatm ent is important to set the final microstruc ture, which impactsmechanical properties . EDITORIAL OPPORTUNITIES FOR HTPro IN 2019 The editorial focus for HTPro in 2019 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. May/June Testing & Process Control September Thermal Processing in On/Off Highway Applications November/December Atmosphere & Vacuum Heat Treating To contribute an article to one of the upcoming issues, contact Frances Richards at frances.richards@ asminternational.org. To advertise, contact us at advertise@asminternational.org . DEPARTMENTS 1 2 | EDITORIAL 1 4 | HEAT TREATING SOCIETY NEWS ABOUT THE COVER In October 2018, GE Aviation celebrated its 30,000th 3D-printed fuel nozzle tip for the LEAP aircraft engine. Courtesy of GE Additive. LOW PRESSURE CARBURIZING PROCESS DESIGN FOR HIGH-ALLOY STEELS Zhichao (Ch arlie) Li, B. Lynn Ferguson, and Justin Sims The lowpre ssure carburizing (LPC) process can be enha nced by using computer modeling to character ize the process and design boost/ diffuse sche dules. EDITOR Frances Richards TECHNICAL ADVISORS HTS R&D Committee CONTRIBUTING EDITOR Ed Kubel PRODUCTIONMANAGER Kelly Sukol ADVERTISING 440.338.5151 advertise@asminternational.org HEAT TREATINGSOCIETY EXECUTIVE COMMITTEE James P. Oakes, President Stephen G. Kowalski, Immediate Past President Eric L. Hutton, Vice President HTPro is published quarterly by ASM International®, 9639 Kinsman Road, Materials Park, OH 44073, 440.338.5151, asminternational.org . Vol. 7, No. 1 Copyright ©2019 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. 10 6