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熔铸法生产的钛合金,存在内部偏析,加工性差的缺点。而金属粉末注射成形(MIM)法,容易加工为最终产品形状。但是,对β稳定型Ti-(10%~15%)Mo合金采用混合粉的MIM加工时,要得到相对密度96%以上的烧结体,就应在1300℃以上烧结2h,这样导致晶粒变得粗大,引起力学性能的下降。
Casting production of titanium alloy, there are internal segregation, the shortcomings of poor workability. The metal powder injection molding (MIM) method, easily processed into the final product shape. However, in the case of MIM processing using a mixed powder of β-stable Ti- (10% to 15%) Mo alloy, a sintered body having a relative density of 96% or more should be sintered at 1300 ° C for 2h, To be coarse, causing the decline in mechanical properties.