Precipitation Kinetics During Post-heat Treatment of an Additively Manufactured Ferritic Stainless Steel
نویسندگان
چکیده
Abstract The microstructure response of laser-powder bed fusion (L-PBF)-processed ferritic stainless steel (AISI 441) during post-heat treatments is studied in detail. Focus on the precipitation kinetics Nb-rich phases: Laves (Fe 2 Nb) and cubic carbo-nitride (NbC), as well grain structure evolution. evolution precipitates characterized using scanning transmission electron microscopy (SEM TEM) experimental results are used to calibrate simulations module (TC-PRISMA) within Thermo-Calc Software package. calculations reproduce main trend for both mean radii phase NbC, amount phase, a function temperature. calibrated model can be optimize treatment additively manufactured components offer creator tool process linkages an integrated computational materials engineering (ICME) framework alloy development steels.
منابع مشابه
Precipitation sequence in niobium-alloyed ferritic stainless steel
Niobium is an important alloying element in the design of heat-resistant ferritic stainless steels for automotive exhaust systems. When in solid solution, it improves both the high temperature strength and the resistance to thermal fatigue. However, it also forms several kinds of precipitates during service. These reactions have been modelled, taking into account the multicomponent nature of th...
متن کاملPhase-Separation, Partitioning and Precipitation in MA956, an ODS Ferritic Stainless Steel
The behaviours of as-received and recrystallised (homogenised) MA 956, an Al-containing Cr-rich ferritic stainless steel, aged at 475 "C for up to 2900 hours have been investigated. Atom probe microanalysis of the decomposition products revealed that A1 did not partition significantly to the Fe-rich phase after =600 hours ageing, contrary to thermodynamic predictions. Ageing to 2900 hours, howe...
متن کاملEVALUATION OF PRECIPITATION HARDENING HEAT TREATMENT OF PH 17-7 STAINLESS STEEL SPRING
In this paper, the influence of heat treatment on PH17-7 stainless steel spring was evaluated. Precipitation hardening phenomenon of PH 17-7 steel was evaluated in three stages. First, the spring constant changes with time and temperature was evaluated. Second, the spring constant changes with respect to its original length at constant temperature and time with blocking (spring length aft...
متن کاملAdditively manufactured hierarchical stainless steels with high strength and ductility.
Many traditional approaches for strengthening steels typically come at the expense of useful ductility, a dilemma known as strength-ductility trade-off. New metallurgical processing might offer the possibility of overcoming this. Here we report that austenitic 316L stainless steels additively manufactured via a laser powder-bed-fusion technique exhibit a combination of yield strength and tensil...
متن کاملEffect of heat treatment on stainless steel orthodontic wires.
This study evaluated the effect of heat treatment on CrNi stainless steel orthodontic archwires. Half of forty archwires of each thickness - 0.014" (0.35 mm), 0.016" (0.40 mm), 0.018" (0.45 mm) and 0.020" (0.50 mm) (totalling 160 archwires) - were subjected to heat treatment while the remainder were not. All of the archwires had their individual thickness measured in the anterior and posterior ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Metallurgical and Materials Transactions
سال: 2022
ISSN: ['1073-5623', '1543-1940']
DOI: https://doi.org/10.1007/s11661-022-06727-w