Influences of Induction Tempering on the Fatigue Strength of Rapid Induction Quenched Steel.

Misaka, Yoshitaka; Kawasaki, K.; Ikuta, Fumiaki; Morita, Tatsuro

doi:10.1299/kikaia.67.1173

Cited by 3 publications

(2 citation statements)

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“…Moreover, residual stress is affected by the hardness of the reheated area 3) . However, in resistance spot welded joints, the effects of maximum temperature and temperature history during post-heating treatment on the residual stress are not investigated in detail.…”

Section: Introductionmentioning

confidence: 99%

The Effects of Temperature during Post-heating Treatment on Residual Stress of Resistance Spot Welded High-strength Steel Sheets

Sato

Nishikawa

Iyota

2017

QUARTERLY JOURNAL OF THE JAPAN WELDING SOCIETY

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This study investigates the effects of maximum temperature and temperature history during post-heating treatment on residual stress of resistance spot welded high-strength steel sheets. To examine the effects of post-heating treatment, numerical simulations were performed. First, the effect of the phase proportion of tempered martensite and maximum temperature was investigated. This result shows that both of the phase proportion of tempered martensite and maximum temperature affect the residual stress. Second, only the effect of the maximum temperature was examined when the almost all martensite changed to tempered martensite. This result shows that the low maximum temperature decreases the residual stress. Finally, as an example, controlling the temperature history was proposed to satisfy both of the controlling the residual stress and shortening the tempering time. This result shows that controlling temperature history can decrease the maximum temperature in short tempering time and control the tensile residual stress.

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Section: Introductionmentioning

confidence: 99%

The Effects of Temperature during Post-heating Treatment on Residual Stress of Resistance Spot Welded High-strength Steel Sheets

Sato

Nishikawa

Iyota

2017

QUARTERLY JOURNAL OF THE JAPAN WELDING SOCIETY

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“…[3][4][5] The tensile and fatigue strength of titanium alloy were improved by short-time induction heat treatment. 6,7) Studies on continuous processing of aluminum alloys for sheet products reported significant grain refinement from 50-70 mm to 10-20 mm by rapid heating.…”

Section: Introductionmentioning

confidence: 99%

Application of High-Frequency Induction Heating Apparatus to Heat Treatment of 6061 Aluminum Alloy

2011

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A high-frequency induction heating apparatus was used for the heat treatment of a commercial 6061 aluminum alloy bar with the objective of improving the mechanical properties and productivity. Heating states of the 6061 alloy bar were examined in terms of temperature distribution, heating rate, overheating and temperature fluctuation; moreover, the mechanical properties of the alloy after heat treatment were also investigated. The results of this study are as follows. When the 6061 alloy bar was rapidly heated to the heat treatment temperature using the induction heating apparatus, temperature distribution and overheating of the sample were small as well as the temperature fluctuations in the holding process. A rapid heating rate of about 21 C/s heated the sample to the heat treatment temperature of 560 C in 26 s. The sample showed equivalent or superior mechanical properties compared with a sample heated by conventional electric furnace. Temperature and time of the heat treatment process greatly influenced the mechanical properties of the 6061 alloy, while there was no significant difference in mechanical properties of the sample heat-treated at various heating rates.

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Application of high-frequency induction heating apparatus to heat treatment of 6061 aluminum alloy

Shang¹,

Sekiya²,

Nakayama³

2012

J. Japan Inst. Light Metals

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A high-frequency induction heating apparatus was used for the heat treatment of a commercial 6061 aluminum alloy bar with the objective of improving the mechanical properties and productivity. Heating states of the 6061 alloy bar were examined in terms of temperature distribution, heating rate, overheating and temperature fluctuation; moreover, the mechanical properties of the alloy after heat treatment were also investigated. The results of this study are as follows. When the 6061 alloy bar was rapidly heated to the heat treatment temperature using the induction heating apparatus, temperature distribution and overheating of the sample were small as well as the temperature fluctuations in the holding process. A rapid heating rate of about 21°C/s heated the sample to the heat treatment temperature of 560°C in 26 s. The sample showed equivalent or superior mechanical properties compared with a sample heated by conventional electric furnace. Temperature and time of the heat treatment process greatly influenced the mechanical properties of the 6061 alloy, while there was no significant difference in mechanical properties of the sample heat-treated at various heating rates.

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Influences of Induction Tempering on the Fatigue Strength of Rapid Induction Quenched Steel.

Cited by 3 publications

References 0 publications

The Effects of Temperature during Post-heating Treatment on Residual Stress of Resistance Spot Welded High-strength Steel Sheets

The Effects of Temperature during Post-heating Treatment on Residual Stress of Resistance Spot Welded High-strength Steel Sheets

Application of High-Frequency Induction Heating Apparatus to Heat Treatment of 6061 Aluminum Alloy

Application of high-frequency induction heating apparatus to heat treatment of 6061 aluminum alloy

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