2%Ni-1%Mo Composite-type Alloyed Steel Powder for Ultra High Strength and High Toughness Sintered materials
2%Ni-1%Mo Composite-type Alloyed Steel Powder for Ultra High Strength and High Toughness Sintered materials
复制标题
2%Ni-1%Mo%20复合型%20合金%20钢%20粉末%20为%20超%20高%20强度%20和%20高%20韧性%20烧结%20材料
DOI：
10.2497/jjspm.37.225
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发表时间：
1990
期刊：
影响因子：
--
通讯作者：
S. Takajo
中科院分区：
文献类型：
--
作者：
Dsamu Furukimi;K. Maruta;T. Abe;S. Takajo
优化了含Ni和Mo的复合型合金钢粉末的组成，以通过压制、烧结和热处理生产超高强度、高韧性的烧结部件。含2%Ni和1%Mo的粉末经一次压制、一次烧结和表面硬化处理后，抗拉强度达到1500MPa，无缺口夏比冲击值达到21J。由相同粉末制成的双压、双烧结和热处理压坯显示出1920MPa的极高拉伸强度和53J的高无缺口夏比冲击值。在热处理之前，烧结的压坯保持相对柔软，并且允许机加工和定尺寸。这种强化归因于富镍奥氏体的应变诱发马氏体相变。
The composition of Ni and Mo containing composite-type alloyed steel powders was optimized for the production of ultra high strength, high toughness sintered components via compaction, sintering and heat treatment. A powder with 2%Ni and 1%Mo attained a high tensile strength of 1500MPa and a high unnotched Charpy impact value of 21J, when single-pressed, single-sintered and case hardened. Double-pressed, double-sintered and heat treated compacts made from the same powder showed an extremely high tensile strength of 1920MPa and a high unnotched Charpy impact value of 53J. The sintered compacts before heat treatment remained relatively soft and allowed machining and sizing. The strengthening was attributed to the strain-induced martensitic transformation of Ni-rich austenite.