Effect of quench and temper on hardness and wear of HRP steel (armor steel candidate)

Yurianto, Yurianto; Pratikto, Pratikto; Soenoko, Rudy; Suprapto, Wahyono

doi:10.15587/1729-4061.2019.156799

Cited by 4 publications

(3 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Another reported ballistic-resistant material manufacturing is through quench heat treatment. The stability between the hardness and brittleness of the steel is affected by the austenizing temperature and tempering tempera-ture [13]. Quenching through oil media can increase the hardness and the hardness slightly decreases after the tempering process.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

An analysis of coil dimensions on induction heating machine against microstructure and hardness distribution as new candidate of projectile-resistant steel plates materials

Purwanto

Tauviqirrahman

Dzulfikar

et al. 2020

EEJET

View full text Add to dashboard Cite

show abstract

Section: Literature Review and Problem Statementmentioning

confidence: 99%

An analysis of coil dimensions on induction heating machine against microstructure and hardness distribution as new candidate of projectile-resistant steel plates materials

Purwanto

Tauviqirrahman

Dzulfikar

et al. 2020

EEJET

View full text Add to dashboard Cite

show abstract

“…Steels used in ballistic armor need both a high hardness to stop an armor-piercing bullet by shattering its tip as well as enough toughness to prevent armor fragmentation after the projectile impact [ 1 , 2 , 3 , 4 ]. The way to simultaneously achieve these properties, which in principle are antagonists, is by combining a heat treatment, usually quench and temper (Q&T), and adding alloying elements that increase the hardenability of the material [ 5 , 6 , 7 , 8 ]. In the case of high hardness steel for armor (HHA), the main alloying additives are chromium (Cr), nickel (Ni), and molybdenum (Mo).…”

Section: Introductionmentioning

confidence: 99%

Microstructure Effect of Heat Input on Ballistic Performance of Welded High Strength Armor Steel

et al. 2021

View full text Add to dashboard Cite

The effect of two different heat inputs, 1.2 and 0.8 kJ/ mg, on the microstructure associated with a welded high hardness armor (HHA) steel was investigated by ballistic tests. A novel way of comparing the ballistic performance between fusion zone (FZ), heat-affected zone (HAZ), and base metal (BM) of the HHA joint plate was applied by using results of the limit velocity V50. These results of V50 were combined with those of ballistic absorbed impact energy, microhardness, and Charpy and tensile strength revealing that the higher ballistic performance was attained for the lower heat input. Indeed, the lower heat input was associated with a superior performance of the HAZ, by reaching a V50 projectile limit velocity of 668 m/s, as compared to V50 of 622 m/s for higher heat input as well as to both FZ and BM, with 556 and 567 m/s, respectively. Another relevant result, which is for the first time disclosed, refers to the comparative lower microhardness of the HAZ (445 HV) vs. BM (503 HV), in spite of the HAZ superior ballistic performance. This apparent contradiction is attributed to the HAZ bainitic microstructure with a relatively greater toughness, which was found more determinant for the ballistic resistance than the harder microstructure of the BM tempered martensite.

show abstract

“…

Although there are many ballistic protection applications that use nonferrous or even nonmetallic armor, armor steels are still the leading material in applications where impact and explosion protection is critical [1][2][3][4]. The ballistic performance of steel

…”

mentioning

confidence: 99%

Effect of welding parameters on the mechanical and metallurgical properties of armor steel weldment

et al. 2022

View full text Add to dashboard Cite

The effect of welding parameters on the mechanical and metallurgical properties of armor steel weldment was studied using gas tungsten arc welding process with two filler wires: carbon steel and austenitic stainless-steel filler wires (AWS A5.18 ER 70S-6 and AWS A5.9 ER 307, respectively). The joint configurations were mainly single V and single bevel grooves. Using both AWS A5.18 ER70S-6 carbon steel filler wire and AWS A5.9 ER307, austenitic filler wire for the two joints passed the required tensile strength by the military standard. The joints successfully regained the base metal hardness at a distance of less than 15 mm. The ultimate tensile strength of the joints welded in a single bevel groove is 906 MPa which is higher than the joints welded using a single V groove is 865 MPa. This could be attributed to the increase in dilution percentage with the single bevel joints. Both single V joint and single bevel joints passed the required Charpy V-notch impact test whether using both carbon and stainless-steel wires. The effect of heat input and cooling rate on the mechanical and microstructure of welded joints was studied. The reduction of heat input caused a narrow HAZ with a small reduction in its hardness values with much reduction in the width of softening microstructure zone. SEM observations show that the base metal has a martensitic structure, but the weld metal microstructures depend on the filler: carbon steel or austenitic steel types. Using a single bevel groove with an austenitic steel filler metal, the weld metal shows a martensitic/austenitic microstructure by SEM observation, and this was verified by the Schaeffler diagram which showed a high dilution percentage (about 35% dilution). This resulted in a significant increase in joint strength and a higher weld metal impact resistance.

show abstract

Effect of quench and temper on hardness and wear of HRP steel (armor steel candidate)

Cited by 4 publications

References 17 publications

An analysis of coil dimensions on induction heating machine against microstructure and hardness distribution as new candidate of projectile-resistant steel plates materials

An analysis of coil dimensions on induction heating machine against microstructure and hardness distribution as new candidate of projectile-resistant steel plates materials

Microstructure Effect of Heat Input on Ballistic Performance of Welded High Strength Armor Steel

Effect of welding parameters on the mechanical and metallurgical properties of armor steel weldment

Contact Info

Product

Resources

About