研究了热处理工艺对ASTMS30432钢和成品样管的晶间腐蚀敏感性和力学性能的影响。试验结果表明,随固溶温度升高,晶间腐蚀敏感性下降,为抑制晶间腐蚀,固溶温度应≥1100℃;钢管固溶后应快速冷却,以避免840℃附近Cr23C6碳化物大量析出导致敏化;固溶温度超过1100℃,随固溶温度升高,晶粒度等级和室温强度逐渐下降。 The effects of heat treatment on the intergranular corrosion susceptibility and mechanical properties of ASTMS30432 steel and finished pipe were investigated. The experimental results show that with the increase of solution temperature, the sensitivity of intergranular corrosion decreases. In order to restrain the intergranular corrosion, the solution temperature should be ≥ 1100 ℃. The solution should be rapidly cooled after solid solution to avoid the precipitation of Cr23C6 carbide near 840 ℃ Lead to sensitization; solution temperature exceeds 1100 ℃, with the solution temperature increases, grain size grade and room temperature strength decreased.