Effect of titanium and nitrogen content on the microstructure, hardenability and mechanical properties of direct quenched and tempered ultra-high strength structural steel October 2016
(PDF) Effects of B on microstructure and hardenability of Effects of B on microstructure and hardenability of resistance seam welded HSLA linepipe steel It has been shown that boron has a significant effect on the microstructure and resultant tensile
Nov 26, 2020 · The resultant microstructure is quite coarse, with reduced toughness and ductility. Effect of austenite grain size on hardenability. The austenite grain size can be affected by other stages in the processing of steel, and therefore the hardenability of a steel also depends on the previous stages employed in its production.
Effect of Nb and Mo additions in the microstructureJan 12, 2021 · In addition, a significant synergetic effect on hardenability could be reached combining B with microalloying elements (adding Nb, Mo or Nb-Mo). With the purpose of exploring the effect of microalloying elements and thermomechanical rolling schedule, laboratory thermomechanical simulations reproducing plate mill conditions were performed using ultra high strength steels micro-alloyed with
Jominy End Quenching of 4140 Steel:The Effect of Time This project investigated the effects of austenitizing temperatures and time on the hardness of 4140 steel. The most common test for studying these effects is the Jominy End Quench test. In this test a 140mm long and 25.4 mm in diameter sample is heated into the austenite range for selected temperatures and times and water spray quenched at one
Dec 01, 2019 · The microstructure and age hardenability of the untreated and ultrasound-treated composites were investigated. The TiC particles accelerate the precipitation kinetics of CuAl 2 phase in Al-4 wt pct Cu alloy. In the present study, the hardness obtained for untreated Al-4 wt pct Cu/TiC composite is 120 VHN within 5 hours of peak aging time, which
The effect of niobium on the hardenability of The powerful effect that varying the extent of niobium-carbide dissolution has on the "hardenability" of microalloyed austenite is demonstrated using dilatometric measurement of the critical cooling rate required to from microstructures containing >95 pct martensite.
Understanding the Jominy End-Quench Test 2015-05-07
HardenabilityTesting ParticularsUses of Hardenability ValuesEffects of Alloying and Microstructure(PDF) Understanding the Jominy end quench test James Effects of Alloying and MicrostructureThe Jominy end quench test measures the effects of microstructure, such as grain size, and alloying on the hardenability of steels.. The main alloying elements that affect hardenability are carbon, a group of elements including Cr, Mn, Mo, Si and Ni, and also boron.
Furthermore strategies are developed to enhance the hardenability of AISI 4140 steel and microstructure analysis after improved hardenability is also done. The Jominy end-quench test is used to measure the hardenability of a steel, which is a measure of the capacity of the steel to harden in depth under a given set of conditions.Effect of hardenability on microstructure and property of Aug 19, 2020 · Microstructure is an indirect product performance of material whose difference has significantly influence on wear resistance. Generally, martensitic microstructure exhibits a better wear resistance performance compared to ferrite, pearlite, and bainite . In addition, the gain size, martensitic volume fraction, and precipitate also have effect on abrasion performance.