分析了平衡凝固MC碳化物规则块状八面体稳态生长的条件及影响MC碳化物稳态生长的因素. 结果表明: 凝固过程中局部冷却速度的改变以及熔体中局部热流方向的扰动, 都将影响熔体中MC碳化物形成元素的扩散, 导致MC碳化物偏离稳态生长条件, 从而使其生长形态多样化.
参考文献
| [1] | Gell M;Levevant G R .The fatigue of the nickle-base superall oy, Mar-M200, in single-crystal and columnlar-grained forms at room temperatu re[J].Transactions of the Metallurgical Society of AIME,1968,242:1869-1879. |
| [2] | Youshinori Murata;Kiyoshi Suge;Natsuo Yukawa .Effect of transition elements on the properties of MC carbide in in-100nickle-based superalloy[J].Journal of Materials Science,1986,21:3653-3660. |
| [3] | Leverent G R;Gell M .The elevated temperature fatigue of a nickle- base superalloy mar-M200, in conventionally-cast and directionlly solidified f orms[J].Transactions of the Metallurgical Society of AIME,1969,245:1167-1173. |
| [4] | 刘林,傅恒志,史正兴.凝固参数对定向镍基铸造高温合金中MC碳化物生长特性的影响[J].航空学报,1986(02):181. |
| [5] | 刘林;傅恒志 .高温合金中碳化物的初生形貌与晶体结构的关系[J].金属学报,1989,25(04):282-287. |
| [6] | Liu Lin;FU Heng zhi .Effect of solidification conditions on MC ca rbide in a nic kle-base superalloy in 738LC[J].Scripta Metallurgica et Materialia,1994,30:587-593. |
| [7] | WANG Hua ming;HU Zhuang qi;TANG Ya jun et al.Rap idly solidi fied MC carbid e morphologies of a laser-glazed single-crystal nickle-base superalloy[J].Materials Science and Engineering,1992,A156:109-116. |
| [8] | 王华明;张静华;汤亚俊 等.冷却速度对单晶镍基高温合金快速凝固MC碳化物生长形态的影响[J].机械工程学报,1993,29(01):47-50. |
| [9] | Jackson K A.Liquid metal & solidification ohio[J].ASM,1958:17. |
| [10] | Kurz W;Fisher D J.Fundamental of Solidification , (i n Chinese)[M].X i′an:Northwestern Polytechnical University Press,1987:36. |
| [11] | 万华明;刘林;田荫棠 等.多石体晶体从金属熔体中生长的形态分析[J].西北工业大学学报,1992,10(03):318-322. |
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