Heterogeneous Austenite Grain Growth in ASTM A213–T91 Steel

The Effect of Precipitate Evolution on Austenite Grain Growth in RAFM Steel

To study the effects of various types of precipitates and precipitate evolution behavior on austenite (size and phase fraction) in reduced activation ferritic/martensitic (RAFM) steel, RAFM steel was heated to various austenitizing temperatures. The microstructures of specimens were observed using optical microscopy (OM) and transmission electron microscopy (TEM). The results indicate that the ...

Research on abnormal grain growth in reversely transformed austenite structure

A Study of Austenite Precipitate Growth in Duplex Stainless Steel A Research Performance Evaluation

As new experimental and characterization techniques are developed and improved, longstanding materials questions that have long been the subject of scientific debate are being revisited and answered. Such questions have surrounded the mechanism of solid-state phase transformation in ferrous systems for many years. Famous experimental and theoretical works produced such well-known metallurgists ...

Crystallography of Widmanstätten austenite in duplex stainless steel weld metal

Two kinds of austenite grow from d-ferrite during the cooling of the duplex stainless steel weld deposits studied here, Widmanstätten plates and allotriomorphs which precipitate at d–d grain boundaries. It is found using microtexture measurements that the preferred crystallographic orientation of the Widmanstätten austenite can be estimated using established theory if it is assumed that there i...

EFFECT OF AUSTENITE GRAIN MORPHOLOGY ON VARIANT SELECTION OF MARTENSITE TRANSFORMED FROM ULTRAFINE-GRAINED AUSTENITE

In this research, variant selection of martensite transformed from ultrafine-grained (UFG) austenite fabricated by accumulative roll bonding (ARB) process and subsequent annealing was investigated with respect tomorphology of parentaustenitic phase. The results show that the original shape of austenite grain is very effective factor in determiningthe preferred variants of martensite transformed...