帮忙出黑的是真的吗

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                        当前位置:帮忙出黑的是真的吗 > 常见问题 > 正文

                        镍基合金能热处理吗?

                        作者: 来源: 日期:2019-9-10 15:20:23

                        按强化方式有固溶强化型合金和沉淀强化型合金。 生产工艺 冶炼方面:为了获得更纯净化的钢水,减低气体含量与有害元素含量;同时由于部分合金中有易氧化元素如Al,Ti等存在,非真空方式冶炼难以控制;更是为了获得更好的热塑性,镍基耐热合金,通常采用真空感应炉熔炼,甚至用真空感应冶炼加真空自耗炉或电渣炉重熔方式进行生产。 变形方面:采用锻造、轧制工艺,对于热塑性差的合金甚至采用挤压开坯后轧制或用软钢(或不锈钢)包套直接挤压工艺。变形的目的是为了破碎铸造组织,优化微观组织结构。 铸造方面:通常用真空感应炉熔炼母合金保证成分与控制气体与杂质含量,并用真空重熔-精密铸造法制成零件。 热处理方面:变形合金和部分铸造合金需进行热处理,包括固溶处理、中间处理和时效处理,以Udmet 500合金为例,它的热处理制度分为四段:固溶处理,1175℃,2小时,空冷;中间处理,1080℃,4小时,空冷;一次时效处理,843℃,24小时,空冷;二次时效处理,760℃,16小时,空冷。以获得所要求的组织状态和良好的综合性能。

                        镍基高温合金按强化方式有固溶强化型合金和沉淀强化型合金。 固溶强化型合金 具有一定的高温强度,良好的抗氧化,抗热腐蚀,抗冷、热疲劳性能,并有良好的塑性和焊接性等,可用于制造工作温度较高、承受应力不大镍基高温合金按强化方式有固溶强化型合金和沉淀强化型合金。 固溶强化型合金 具有一定的高温强度,良好的抗氧化,抗热腐蚀,抗冷、热疲劳性能,并有良好的塑性和焊接性等,可用于制造工作温度较高、承受应力不大

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                        帮忙出黑的是真的吗

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