CN115505860B - 55Ni20Cr10Fe9Co高温合金的生产方法 - Google Patents

55Ni20Cr10Fe9Co高温合金的生产方法 Download PDF

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CN115505860B
CN115505860B CN202211054340.3A CN202211054340A CN115505860B CN 115505860 B CN115505860 B CN 115505860B CN 202211054340 A CN202211054340 A CN 202211054340A CN 115505860 B CN115505860 B CN 115505860B
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CN115505860A (zh
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吕达
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Hebei Hegang Material Technology Research Institute Co ltd
HBIS Co Ltd
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    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
    • C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
    • C22F1/10—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of nickel or cobalt or alloys based thereon
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/16—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling wire rods, bars, merchant bars, rounds wire or material of like small cross-section
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C19/00—Alloys based on nickel or cobalt
    • C22C19/03—Alloys based on nickel or cobalt based on nickel
    • C22C19/05—Alloys based on nickel or cobalt based on nickel with chromium
    • C22C19/051—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W
    • C22C19/055—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W with the maximum Cr content being at least 20% but less than 30%
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C19/00—Alloys based on nickel or cobalt
    • C22C19/03—Alloys based on nickel or cobalt based on nickel
    • C22C19/05—Alloys based on nickel or cobalt based on nickel with chromium
    • C22C19/051—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W
    • C22C19/056—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W with the maximum Cr content being at least 10% but less than 20%

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
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Abstract

本发明公开了一种55Ni20Cr10Fe9Co高温合金的生产方法，其包括轧前热处理、轧制和时效处理工序；所述轧前热处理工序：将锻坯加热到800±10℃，保温；再随炉升温至1130±10℃，保温；所述轧制工序：所述锻坯先在1130℃～1150℃进行初次轧制，随后控温至960℃～980℃进行终轧成形，得到轧棒；所述时效处理工序：所述轧棒在740℃～760℃保温后，降温至640℃～660℃、保温，最后空冷。本方法能高温合金基体组织具有良好的应力状态，保证了后续热加工顺利完成；所述轧制工艺能使轧棒组织更为均匀稳定，且晶粒更细化；通过时效处理，既保证了硬化相的充分析出，也保证了材料具有足够高的硬度。

Description

55Ni20Cr10Fe9Co高温合金的生产方法
技术领域
本发明涉及一种高温合金的轧制及热处理方法，尤其是一种55Ni20Cr10Fe9Co高温合金的生产方法。
背景技术
55Ni20Cr10Fe9Co高温合金具有较高的强度、良好的抗疲劳性能和较高的高温硬度。由于55Ni20Cr10Fe9Co高温合金Co含量较高，能够细化晶粒，提高钢的高温强度和硬度，在较高的温度下具有很好的耐磨性和尺寸稳定性。但是，采用常规的轧制方法对55Ni20Cr10Fe9Co高温合金进行轧制时，容易造成晶粒较大、硬度较低等问题，造成了高温服役性能短、综合成本较高等问题。
发明内容
本发明要解决的技术问题是提供一种55Ni20Cr10Fe9Co高温合金的生产方法，以提高其轧制成材率和服役寿命。
为解决上述技术问题，本发明所采取的技术方案是：其包括轧前热处理、轧制和时效处理工序；
所述轧前热处理工序：将锻坯加热到800±10℃，保温；再随炉升温至1130±10℃，保温；
所述轧制工序：所述锻坯先在1130℃～1150℃进行初次轧制，随后控温至960℃～980℃进行终轧成形，得到轧棒；
所述时效处理工序：所述轧棒在740℃～760℃保温后，降温至640℃～660℃、保温，最后空冷。
本发明所述轧前热处理工序中，在800±10℃保温60～90min，在1130±10℃保温120～150min。
本发明所述时效处理工序中，轧棒在740℃～760℃保温22～24h，0.5h及以内降温至640℃～660℃、保温22～24h，最后空冷。
采用上述技术方案所产生的有益效果在于：本发明能使55Ni20Cr10Fe9Co高温合金基体组织具有良好的应力状态，保证了后续热加工顺利完成；所述轧制工艺能使轧棒组织更为均匀稳定，且晶粒更细化；通过时效处理，既保证了硬化相的充分析出，也保证了材料具有足够高的硬度。
本发明所得55Ni20Cr10Fe9Co高温合金锻件检测650℃拉伸性能，其抗拉强度为1150～1320MPa、屈服强度为910～1050MPa、断面收缩率为18％～25％、硬度为44.5～47.5HRC。
具体实施方式
下面结合具体实施方式对本发明作进一步详细的说明。
实施例1-6：本55Ni20Cr10Fe9Co高温合金的生产方法具体如下所述。
（1）所述55Ni20Cr10Fe9Co高温合金的化学元素及其重量百分含量为：C 0.01％～0.03％、Mn≤0.30％、Si≤0.30％、S≤0.020％、P≤0.020％、稀土≤0.010％，Cr 19.0％～21.0％、Fe 9.0％～11.0％、Co 8.0％～10.0％、Nb 4.0％～4.5％、Mo 2.0％～2.5％、Al0.8％～1.20％，Ti 0.7％～1.0％、余量为Ni。各实施例所述55Ni20Cr10Fe9Co高温合金的主要化学元素见表1。
表1：各实施例55Ni20Cr10Fe9Co高温合金的主要化学元素（wt%）
（2）所述55Ni20Cr10Fe9Co高温合金的生产方法包括轧前热处理、轧制、时效处理工序；各工序工艺如下所述：
A、锻前热处理工序：将锻坯加热到800±10℃、第一次保温60～90min；再随炉升温至1130±10℃、第二次保温120～150min。
B、轧制工序：所述锻坯先在1130℃～1150℃进行初次轧制，随后控温至960℃～980℃进行终轧成型，得到轧棒；
C、时效处理工序：所述轧棒在740℃～760℃、一段保温22～24h；0.5h及以内降温至640℃～660℃，随后二段保温22～24h，最后空冷至室温，即可得到55Ni20Cr10Fe9Co高温合金轧棒成品。各实施例的具体工艺见表2。
表2：各实施例的具体工艺
（3）各实施例所得55Ni20Cr10Fe9Co高温合金轧制成品进行高温拉伸性能检测，检测结果见表3。
表3：各实施例所得55Ni20Cr10Fe9Co高温拉伸性能及硬度检测结果
。

Claims (2)

1.一种55Ni20Cr10Fe9Co高温合金的生产方法，其特征在于：其包括轧前热处理、轧制和时效处理工序；
所述轧前热处理工序：将锻坯加热到800±10℃，保温；再随炉升温至1130±10℃，保温；
所述轧制工序：所述锻坯先在1130℃～1150℃进行初次轧制，随后控温至960℃～980℃进行终轧成形，得到轧棒；
所述时效处理工序：所述轧棒在740℃～760℃保温22～24h，0.5h及以内降温至640℃～660℃、保温22～24h，最后空冷；
所述55Ni20Cr10Fe9Co高温合金的化学元素及其重量百分含量为：C 0.01％～0.03％、Mn≤0.30％、Si≤0.30％、S≤0.020％、P≤0.020％、稀土≤0.010％，Cr 19.0％～21.0％、Fe 9.0％～11.0％、Co 8.0％～10.0％、Nb 4.0％～4.5％、Mo 2.0％～2.5％、Al 0.8％～1.20％，Ti 0.7％～1.0％、余量为Ni。
2.根据权利要求1所述的55Ni20Cr10Fe9Co高温合金的生产方法，其特征在于：所述轧前热处理工序中，在800±10℃保温60～90min，在1130±10℃保温120～150min。
CN202211054340.3A 2022-08-30 2022-08-30 55Ni20Cr10Fe9Co高温合金的生产方法 Active CN115505860B (zh)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104745992A (zh) * 2015-04-26 2015-07-01 邢桂生 发动机涡轮用高温合金的热处理方法
CN105821250A (zh) * 2015-01-06 2016-08-03 宝钢特钢有限公司 一种高强度镍基高温合金及其制造方法
CN111485126A (zh) * 2020-04-07 2020-08-04 中国航发北京航空材料研究院 镍-铬-铁-钴基变形高温合金丝材制备方法

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* Cited by examiner, † Cited by third party
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US8313593B2 (en) * 2009-09-15 2012-11-20 General Electric Company Method of heat treating a Ni-based superalloy article and article made thereby
EP2980258B8 (en) * 2013-03-28 2019-07-24 Hitachi Metals, Ltd. Ni-BASED SUPERALLOY AND METHOD FOR PRODUCING SAME

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105821250A (zh) * 2015-01-06 2016-08-03 宝钢特钢有限公司 一种高强度镍基高温合金及其制造方法
CN104745992A (zh) * 2015-04-26 2015-07-01 邢桂生 发动机涡轮用高温合金的热处理方法
CN111485126A (zh) * 2020-04-07 2020-08-04 中国航发北京航空材料研究院 镍-铬-铁-钴基变形高温合金丝材制备方法

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