Effect of Si Content on Structure and Mechanical Properties of Ultra Supercritical Steam Turbine Rotor Steel 30Cr2Ni4MoV

范倚; 范新有; 李士琦; 韩建军; 刘超

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Effect of Si Content on Structure and Mechanical Properties of Ultra Supercritical Steam Turbine Rotor Steel 30Cr2Ni4MoV

更新时间：2026-01-21

- Effect of Si Content on Structure and Mechanical Properties of Ultra Supercritical Steam Turbine Rotor Steel 30Cr2Ni4MoV
- Special Steel Vol. 32, Issue 4, Pages: 57-59(2011)
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- Received：23 January 2011，
  
  Online First：03 November 2022，
  
  Published：03 November 2011
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范倚, 范新有, 李士琦, et al. Effect of Si Content on Structure and Mechanical Properties of Ultra Supercritical Steam Turbine Rotor Steel 30Cr2Ni4MoV[J]. Special Steel, 2011, 32(4): 57-59.
DOI：

范倚, 范新有, 李士琦, et al. Effect of Si Content on Structure and Mechanical Properties of Ultra Supercritical Steam Turbine Rotor Steel 30Cr2Ni4MoV[J]. Special Steel, 2011, 32(4): 57-59. DOI：

摘要

30Cr2Ni4MoV钢(%:0.15～0.16C、0.03～0.45Si、0.12～0.14Mn、0.005P、0.005～0.006S、1.62～1.72Cr、3.60～3.63Ni、0.52～0.53Mo、0.07V、≤0.005A1)由10kg真空感应炉冶炼

锻后经930℃空冷+900℃空冷+640℃空冷处理

再经850℃水淬+600℃回火调质处理。试验结果表明

当钢中的Si含量由0.03%增加至0.45%时

钢中马氏体量增加

晶粒更为粗大;钢的抗拉和屈服强度分别从922～936 MPa和868～873 MPa增至1015～1028 MPa和950～959 MPa

但平均冲击功由205 J降至154 J。

Abstract

Steel 30Cr2Ni4MoV (% ： 0. 15 ~ 0. 16C

0. 03 〜0.45Si

0. 12 〜0. 14Mn

0. 005 P

0. 005 〜0.006S

1. 62 ~ 1. 72Cr

3. 60 〜3. 63Ni

0. 52 〜0. 53Mo

0. 07V

≤0.005Al) is melted by a 10 kg vacuum induction furnace

forged bar treaded at 930 °C air cooling + 900 °C air cooling +640 °C air cooling

then water quenched at 850 ℃ following tempered at 600 ℃. Examination results show that as the Si content in steel increases from 0. 03% to 0. 45%

the amount of martensite in steel increases and the grains become coarser ； and the tensile and yield strength of steel increase respectively from 922 〜936 MPa and 868 〜873 MPa to 1 015 〜1 028 MPa and 950 〜959 MPa

while the average impact energy of steel decreases from 205 J to 154 J.

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