南方科技大学知识苑(SUSTech KC): 一种减少热裂的沉淀强化镍基高温合金激光粉床熔融成形方法

Title	一种减少热裂的沉淀强化镍基高温合金激光粉床熔融成形方法
Alternative Title	Precipitation strengthening nickel-based high-temperature alloy laser powder bed melting forming method capable of reducing hot cracks
Author	郭川; 朱强 ; 徐振 ; 李干 ; 周阳
First Inventor	郭川
Original applicant	南方科技大学
First applicant	南方科技大学
Address of First applicant	518055 广东省深圳市南山区西丽学苑大道1088号
Current applicant	南方科技大学
Address of Current applicant	518055 广东省深圳市南山区西丽学苑大道1088号 (广东,深圳,南山区)
First Current Applicant	南方科技大学
Address of First Current Applicant	518055 广东省深圳市南山区西丽学苑大道1088号 (广东,深圳,南山区)
Application Number	CN202011615424.0
Application Date	2020-12-30
Open (Notice) Number	CN112828289A
Date Available	2021-05-25
Status of Patent	实质审查
Legal Date	2021-06-11
Subtype	发明申请
SUSTech Authorship	First
Abstract	本发明提供一种减少热裂的沉淀强化镍基高温合金激光粉床熔融成形方法，所述方法通过将稀土元素氧化物颗粒和沉淀强化镍基高温合金粉末混合后再进行激光粉床熔融成形，稀土元素氧化物颗粒与沉淀强化镍基高温合金粉末在连续激光作用下相互作用，从而达到了能够富集原始沉淀强化镍基高温合金粉末中的有害元素，减少了有害元素沿晶界的偏析，因此熔体在凝固的最后阶段液膜的形成受到相应的阻碍，大大减少了热裂纹的出现。
Other Abstract	The invention provides a precipitation strengthening nickel-based high-temperature alloy laser powder bed melting forming method capable of reducing hot cracks. According to the method, rare earth element oxide particles and precipitation strengthening nickel-based high-temperature alloy powder are mixed and then subjected to laser powder bed melting forming, the rare earth element oxide particles and the precipitation strengthening nickel-based high-temperature alloy powder interact under the action of continuous laser, and therefore harmful elements in the original precipitation strengthening nickel-based high-temperature alloy powder can be enriched, segregation of the harmful elements along the crystal boundary is reduced, forming of a liquid film of melt at the final stage of solidification is correspondingly hindered, and the hot cracks are greatly reduced.
CPC Classification Number	C22C1/0433 ; C22C19/056 ; B33Y10/00
IPC Classification Number	B22F3/105 ; B33Y10/00 ; C22C1/04 ; C22C19/05
INPADOC Legal Status	（ENTRY INTO FORCE OF REQUEST FOR SUBSTANTIVE EXAMINATION）[2021-06-11][CN]
INPADOC Patent Family Count	1
Extended Patent Family Count	1
Priority date	2020-12-30
Patent Agent	潘登
Agency	北京品源专利代理有限公司
URL	[Source Record]
Data Source	PatSnap
Document Type	Patent
Identifier	http://kc.sustech.edu.cn/handle/2SGJ60CL/531725
Department	Department of Mechanical and Energy Engineering
Recommended Citation GB/T 7714	郭川,朱强,徐振,等. 一种减少热裂的沉淀强化镍基高温合金激光粉床熔融成形方法.

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