نتایج جستجو برای: reversion annealing
تعداد نتایج: 31395 فیلتر نتایج به سال:
In this work, the variant selection of martensite in a stainless maraging steel was investigated by electron backscattering diffraction and new protocol parent phase reconstruction. The reconstruction enables digital austenite reversion into prior microstructure provides information from large number grains. It found that strong occurred when grains were significantly refined annealing or sever...
The current study applied thermomechanical processing (TMP) on 301 austenitic stainless steel to produce an ultrafine-grained structure, examining the dual effects of deformation at subzero temperature and TMP cycles strain-induced α′-martensitic transformation austenite reversion occurring upon subsequent annealing. Three schemes were adopted: (1) one cycle using a strain 0.30, (2) two 0.20, (...
The effects of starting microstructure and intercritical annealing temperature on the phase-transformation kinetics microstructural evolution a prototype Fe–0.15C–5.56Mn–1.1Si–1.89Al medium-Mn third-generation advanced high-strength steel are examined. microstructures comprise 1) an as-received cold-rolled (CR) containing significant fraction ferrite tempered martensite 2) austenitized quenched...
The combination of precipitation-hardening stainless steels (PH-SS) and laser powder bed fusion (LPBF) enables the manufacturing tools for plastic injection moulding with optimised geometry conformal cooling channels, potential benefits in terms productivity, part quality, tool duration. Moreover, suitability LPBF-manufactured PH-SS as-built (AB) condition to be age-hardened through a direct ag...
The effect of 16 different genes (rad) conferring radiation sensitivity on chemically induced reversion in the yeast Saccharomyces cerevisiae was determined. The site of reversion used was a well-defined chain initiation mutant mapping in the structural gene coding for iso-1-cytochrome c. High doses of EMS and HNO(2) resulted in decreased reversion of cyc1-131 in rad6, rad9 and rad15 strains co...
In this paper, we study the online portfolio selection problem from the perspective of meta learning for mean reversion. The online portfolio selection problem aims to maximize the final accumulated wealth by rebalancing the portfolio at each time period based on the portfolio prices announced before. Mean Reversion is a typical principle in portfolio theory and strategies that utilize this pri...
BACKGROUND Little is currently known regarding sputum smear reversion (acid-fast smear becomes positive again after negative conversion) during anti-tuberculous treatment. This study aimed to evaluate its occurrence in patients with pulmonary tuberculosis (TB) and identify factors predicting results of mycobacterial culture for smear-reversion of sputum samples. METHODS The retrospective revi...
•Secondary, reversion mutations in BRCA genes can restore protein function.•Reversion mutations can underlie resistance to therapies such as PARP inhibitors.•Reversion mutations arise during the course of treatment.
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