Effect of Tempering Temperatures on Tensile Properties and Rotary Bending Fatigue Behaviors of 17Cr2Ni2MoVNb Steel

Qu, Shengguan; Zhang, Yalong; Lai, Fuqiang; Li, Xiaoqiang

doi:10.3390/met8070507

Cited by 12 publications

(8 citation statements)

References 20 publications

(16 reference statements)

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“…Because the addition of the microalloying element Nb hinders the growth of austenite grains during carburizing, the grain size of 17CrNi2MoVNb is relatively fine and uniform [ 16 ]. A small amount of Ni can improve the ductility of alloys, the added Mo is helpful for precipitation strengthening, and a small amount of V can inhibit the abnormal growth of austenite grains [ 17 , 18 ]. Therefore, 17CrNi2MoVNb alloys present the advantages of relatively high surface hardness as well as superior strength and toughness.…”

Section: Experimental Workmentioning

confidence: 99%

Grinding Force and Surface Formation Mechanisms of 17CrNi2MoVNb Alloy When Grinding with CBN and Alumina Wheels

Jiang

Liu²,

et al. 2023

Materials

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The 17CrNi2MoVNb alloy is widely used for manufacturing heavy-duty gears in vehicles’ transmission systems, where grinding is a significant process affecting gears’ working performance and service life. This work comprehensively analyzed the grinding force, surface morphology, and surface roughness when grinding 17CrNi2MoVNb alloy using alumina and CBN grinding wheels. Results showed that the maximum normal grinding force from the CBN wheel was only ~67% of the one from the alumina wheel. Due to the small size and limited cutting depth of CBN grains, the grinding force increased by about 20% when the grinding depth increased from 0.02 to 0.03 mm for CBN grinding wheels. Surface defects, including cavities and material tearing, were mainly found on the ground surface when using an alumina grinding wheel. The surface roughness Ra recorded from the CBN grinding wheel mainly ranged from 0.263 to 0.410 μm, accounting for less than 40% of the one from the alumina grinding wheel. The information from this work could provide benchmark data and references for optimizing grinding tools and parameters when manufacturing gears in the vehicle industry.

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Section: Experimental Workmentioning

confidence: 99%

Grinding Force and Surface Formation Mechanisms of 17CrNi2MoVNb Alloy When Grinding with CBN and Alumina Wheels

Jiang

Liu²,

et al. 2023

Materials

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“…An earlier investigation using 17Cr2Ni2MoVNb gear steel samples tempered at 180 °C, 400 °C, and 620 °C temperatures found that fatigue life rose as cycle stress reduced and decreased as tempering temperatures climbed from 180 °C to 600 °C, which is consistent with the current findings. [18]. It should be emphasized that the dislocation had a role in determining fatigue strength limitations, and high-density dislocations helped to improve fatigue strength.…”

Section: Schemes the Relation Between Maximum Stress And Number Of Cy...mentioning

confidence: 99%

“…While the temperature ranges of phase change are covered in detail [17]. Articles [18][19][20] show that stress behavior in PHS is subject to surface irregularities, such as crack defects in the coating and shear edge defects, which act as the sites of initiation and growth of fatigue cracks. These effects can be reduced by conducting lead-piercing or sandblasting operations that smooth the surface and eliminate internal stresses, as noted in articles [21][22][23] that of uncoated PHS and AHSS.…”

Section: Introductionmentioning

confidence: 99%

Fatigue Behaviour of Tempered and Isothermal Heat Treated Aisi 5160 Leaf Spring Steel

2023

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The oil quench and temper technique have a lot of benefits for heavy duty spring manufacture since it may expose the best balance of toughness and ductility, as well as increase fatigue life. The current study looked at the fatigue behavior of tempered AISI 5160 leaf spring steel samples at tempering temperatures of 400, 450, 500, 550, and 600 °C, as well as isothermally heat- treated steel samples at 830 °C. All leaf spring steel samples that had undergone thermal tempering and isothermal heat treatment were then tested up to fracture utilizing rotational fatigue test equipment under the effect of various stress levels. All steel samples subjected to tempering heat treatments of 400°C to 600°C showed a decrease in hardness ratings. The Rockwell hardness ratings of the steel samples that treated to isothermal heat treatment increased significantly. Experimental fatigue testing revealed that the values of fatigue resistance for steel samples tempered at (400 and 450) °C temperatures dropped by a small amount. The fatigue resistance values for steel specimens tempered at 500 °C to 600 °C temperatures decreased more than the values for steel samples tempered at 500 to 600 °C temperatures. A fatigue resistance of steel samples that were treated to isothermal heat treatments, on the other hand, increased. Steel samples that were isothermally heat-treated at 830 °C and then chilled in a salt brine solution, on the other hand, showed an increase in fatigue resistance

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“…It was observed that the higher tempered specimens exhibited a large grain size. 21,32 The average hardness values of specimens are represented in a graph with respect to untempered and tempered temperatures shown in Figure 1(b). The curve is almost straight.…”

Section: Mechanical Propertiesmentioning

confidence: 99%

Experimental analysis of mechanical behaviour and residual stresses of EN-36C alloy steel with and without tempering

Maurya

Niranjan

2021

Proceedings of the Institution of Mechanical Engineers, Part E:

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The intense demands of nickel chromium case hardened steel (EN-36C) alloy steel in different engineering applications are increasing day by day due to its cheap and easy availability. The effect of different stages of tempering on EN-36C alloy steel has been carried out to check the mechanical behavioural, microstructural properties and residual stresses in the present work. The effect of tempering on response variables viz., material removal rate, surface roughness, tool tip temperature and residual stresses are evaluated. The cosα method is used to measure the residual stresses in the specimen using two-dimensional detectors such as imaging plates. Further, the influence of tempering on mechanical properties such as tensile strength, hardness, toughness and percentage elongation has been observed. Experimental results depicted that the ductility and toughness are improved without significant change in hardness in the specimen tempered at 500°C. The mechanical properties of specimens tempered at 500°C are found to be a tensile strength of 680.42 MPa, hardness 92 Rockwell hardness of scale B and toughness 187 J. The maximum value of material removal rate (12596.80 mm3/min), minimum tool tip temperature (61.33°C), average surface roughness ( Ra = 1.93, Rq = 2.36, Rz = 10.30) and lowest residual stress 217 MPa are observed in the specimens tempered at 500°C.

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Effect of Tempering Temperatures on Tensile Properties and Rotary Bending Fatigue Behaviors of 17Cr2Ni2MoVNb Steel

Cited by 12 publications

References 20 publications

Grinding Force and Surface Formation Mechanisms of 17CrNi2MoVNb Alloy When Grinding with CBN and Alumina Wheels

Grinding Force and Surface Formation Mechanisms of 17CrNi2MoVNb Alloy When Grinding with CBN and Alumina Wheels

Fatigue Behaviour of Tempered and Isothermal Heat Treated Aisi 5160 Leaf Spring Steel

Experimental analysis of mechanical behaviour and residual stresses of EN-36C alloy steel with and without tempering

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