用透射电子显微镜和JMatPro模拟软件, 对T92钢在650 ℃,120 MPa条件下蠕变时Laves相的析出和熟化行为进行了研究。结果表明: T92钢中Laves相的溶解温度为710.5 ℃, 所以其在730~800 ℃回火后的供货态中不含Laves相; 但在650 ℃蠕变和时效30 h后钢中均析出了Laves相; Laves相易于依附于M23C6形核是由于钨、硅在M23C6周围的富集; 在蠕变过程中Laves相的熟化速率约为19.6 nm3/s, 与时效过程对比发现, 应力会促进Laves相的熟化过程。
所属栏目
上海市引进技术与创新项目(07X1-020)
收稿日期
2010/9/32011/3/10
作者单位
郝曼曼:上海交通大学材料科学与工程学院, 上海 200240
彭碧草:上海交通大学材料科学与工程学院, 上海 200240
王起江:上海交通大学材料科学与工程学院, 上海 200240宝钢股份研究院, 上海 201900
张澜庭:上海交通大学材料科学与工程学院, 上海 200240
备注
郝曼曼(1982-), 女, 河北邢台人, 硕士研究生。
引用该论文:
HAO Man-man,PENG Bi-cao,WANG Qi-jiang,ZHANG Lan-ting.Precipitation and Coarsening of Laves Phases in T92 Steels in the Process of Creep[J].Materials for mechancial engineering,2011,35(10):32～35
郝曼曼,彭碧草,王起江,张澜庭.T92钢在蠕变过程中Laves相的析出与熟化行为[J].机械工程材料,2011,35(10):32～35
被引情况:
【1】
郭晓峰,巩建鸣,姜勇, "650 ℃等温时效过程中P92钢沉淀相的转变规律",机械工程材料
39, 41-43(2015)
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