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| 1 | Effect of Baking Process on Microstructures and Mechanical Properties of Low Silicon TRIP Steel Sheet With Niobium显示文摘After 2% predeformation,the baking treatment with different schedule was carried out for low silicon TRIP steel sheet with niobium.The effects of baking temperature and time on microstructures and mechanical properties were investigated.The results showed that with increasing the baking temperature and time,the volume fraction of retained austenite decreases,and the volume fraction of tempered martensite increases;as baking temperature ranges from 80 ℃ to 170 ℃,the bake-hardening(BH)value increases obviously,while from 170 ℃ to 230 ℃,the variation of BH value is very slight;as baking time ranges from 2 min to 20 min,the BH value increases significantly,while the BH value decreases when baking time exceeds 20 min.So that when the baking temperature is 170 ℃ and the baking time is 20 min,the low silicon TRIP steel sheet exhibits good bake-hardening behavior,and the highest BH value is above 70 MPa. | TANG Zheng-you DING Hua DING Hao CAI Ming-hui DULin-xiu | 2010 | Journal of Iron and Steel Research(International)2010，17，7： | 6 |
| 2 | Effect of Prestrain on Microstructures and Properties of Si-Al-Mn TRIP Steel Sheet With Niobium显示文摘Paint baking treatment was carried out in a silicon oil bath at 170℃ for 20min for Si-Al-Mn TRIP Steel sheet with different prestrains,and effect of prestrain on microstructures and properties was studied before and after baking.The results show that with the increasing of prestrain amount during prestraining and baking,the volume fraction of retained austenite decreases,and the volume fraction of martensite and bainite increases as well as yield strength increases;as prestrain ranges from 0 to 4%,the baking-hardening(BH)value increases;while the prestrain ranges from 4% to 16%,the BH value decreases;when the prestrain amount is 4%,the highest BH value is about 70MPa for Si-Al-Mn TRIP steel sheet with niobium,which displays excellent baking-hardening behavior. | TANG Zheng-you DING Hua DING Hao CAI Ming-hui DU Lin-xiu | 2010 | Journal of Iron and Steel Research(International)2010，17，4： | 3 |
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