Failure Analysis of AISI 440C Steel Ball Screws Used in the Actuator System of a Satellite Launch Vehicle

Manwatkar, Sushant K.; Bahrudheen, A.; Tiwari, Shashi Bhushan; Murty, S. V. S. Narayana; Narayanan, P. Ramesh

doi:10.1007/s11668-017-0268-5

Cited by 12 publications

(3 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…440C steel balls have played a signi cant role in many applications of modern science, including valves [1,2], actuators [3][4][5], automotive high-speed machine tools [6,7], and bearings [8][9][10]. However, these steel balls often operate in a very harsh environment, particularly in bearings.…”

Section: Introductionmentioning

confidence: 99%

Improved wear resistance of 440C steel balls through mechanical alloying with Al 2 O 3 powders

Liu

Zhang

et al. 2023

Preprint

View full text Add to dashboard Cite

This study investigates the effect of mechanical ball milling with Al2O3 powders on the wear resistance of 440C steel balls. A specially-designed grinding jar was employed for the mechanical ball milling process, allowing for the comparison of samples treated with Al2O3 powders and without Al2O3 powders, as well as the heat-treatment samples. The roughness, microhardness, residue stress, and wear resistance of treated samples were investigated and compared. The results reveal that the addition of Al2O3 powders leads to significant grain refinement, increased dislocation density, and the presence of nano-structured staking faults. The treated samples exhibit a strengthened layer exceeding 200 µm, with maximum microhardness reaching 753 HV and residual stress measuring − 237 MPa. Furthermore, the treated samples demonstrate reduced coefficient of friction, wear volume, and improved wear resistance compared to the other samples. These findings highlight the efficiency of mechanical ball milling with Al2O3 powders in enhancing the wear resistance of ball mechanical components, thereby offering potential benefits for industrial applications.

show abstract

Section: Introductionmentioning

confidence: 99%

Improved wear resistance of 440C steel balls through mechanical alloying with Al 2 O 3 powders

Liu

Zhang

et al. 2023

Preprint

View full text Add to dashboard Cite

show abstract

“…Typical applications of MSS are bearing, knife, molds, dies, surgical tools, and pumps. [1][2][3] AISI 440C is an example of MSS used when high wear resistance is required. The high carbon content in this steel (0.95-1.2 wt%) is responsible for high hardness and consequently high wear resistance.…”

Section: Introductionmentioning

confidence: 99%

“…The high carbon content in this steel (0.95-1.2 wt%) is responsible for high hardness and consequently high wear resistance. [2,3] The microstructure and consequently the final properties of the steel are influenced by the heat treatment performed. To maximize the hardness, the steel is quenched and tempered at a specific temperature, time, and medium to obtain a better combination of martensite and carbides.…”

Section: Introductionmentioning

confidence: 99%

Effect of heat treatment on the chromium‐depleted zones of a high carbon martensitic stainless steel

Siqueira

Alves

Luiz

et al. 2021

Materials & Corrosion

View full text Add to dashboard Cite

Heat treatments are commonly applied in the martensitic stainless steels to achieve high wear resistance and hardness; however, they can lead to a decrease in corrosion resistance due to the precipitation of chromium-rich carbides. The present work investigates the effect of austenitizing and tempering parameters on the microstructure, hardness, and passivation and reactivation currents of AISI 440C. A double-loop electrochemical potentiodynamic reactivation test is performed to evaluate the dissolution and precipitation of chromium-rich carbides. The volume fraction of phases after heat treatment is estimated by X-ray diffraction. Results show that an increase in the austenitizing temperature leads to an increase in the carbide dissolution, and also in the amount of retained austenite. As a consequence, low passivation and reactivation currents are obtained. When austenite is the main phase, the increase of austenitizing time contributed to an increase in the degree of sensitization due to austenite grain boundary carbon enrichment. However, the presence of austenite after tempering kept part of the carbon in a solid solution resulting in low passivation and reactivation currents.

show abstract

Metallurgical Analysis of Failed AISI 440C Hydraulic Amplifier Valve Spool for Launch Vehicle Actuators

Jalaja

Manwatkar

Gupta

et al. 2023

J Fail. Anal. and Preven.

View full text Add to dashboard Cite

Failure Analysis of AISI 440C Steel Ball Screws Used in the Actuator System of a Satellite Launch Vehicle

Cited by 12 publications

References 5 publications

Improved wear resistance of 440C steel balls through mechanical alloying with Al 2 O 3 powders

Improved wear resistance of 440C steel balls through mechanical alloying with Al 2 O 3 powders

Effect of heat treatment on the chromium‐depleted zones of a high carbon martensitic stainless steel

Metallurgical Analysis of Failed AISI 440C Hydraulic Amplifier Valve Spool for Launch Vehicle Actuators

Contact Info

Product

Resources

About