【摘 要】
：
通过系列温度淬火试验对低合金耐蚀27CrMo48VNb钢油井管进行热处理,并采用光学显微镜和透射电镜对不同温度淬火后组织、原奥氏体晶粒以及析出相进行了观察,研究了淬火温度对试验钢组织、晶粒尺寸和析出相的影响.结果表明,试验钢淬火后形成了马氏体组织.随着淬火温度升高,淬火后马氏体组织和原奥氏体晶粒尺寸逐渐增加.当淬火温度为890～1000℃时,随着淬火温度升高,晶粒尺寸增加较小;当淬火温度超过1000℃时,随着淬火温度升高,原奥氏体晶粒显著粗化.组织和原奥氏体晶粒尺寸随淬火温度的变化趋势与高温析出相溶解析出
【机 构】
：
天津钢管制造有限公司,天津 300301
论文部分内容阅读
通过系列温度淬火试验对低合金耐蚀27CrMo48VNb钢油井管进行热处理,并采用光学显微镜和透射电镜对不同温度淬火后组织、原奥氏体晶粒以及析出相进行了观察,研究了淬火温度对试验钢组织、晶粒尺寸和析出相的影响.结果表明,试验钢淬火后形成了马氏体组织.随着淬火温度升高,淬火后马氏体组织和原奥氏体晶粒尺寸逐渐增加.当淬火温度为890～1000℃时,随着淬火温度升高,晶粒尺寸增加较小;当淬火温度超过1000℃时,随着淬火温度升高,原奥氏体晶粒显著粗化.组织和原奥氏体晶粒尺寸随淬火温度的变化趋势与高温析出相溶解析出行为有关.试验钢的淬火温度应控制在890～1000℃.
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