![具有定制特性的镀锌热成形钢部件](/CN/2017/1/44/images/201710224443.jpg)
基本信息:
- 专利标题: 具有定制特性的镀锌热成形钢部件
- 申请号:CN201710224443.2 申请日:2017-04-07
- 公开(公告)号:CN107338345B 公开(公告)日:2019-05-31
- 发明人: 王建锋
- 申请人: 通用汽车环球科技运作有限责任公司
- 申请人地址: 美国密歇根州
- 专利权人: 通用汽车环球科技运作有限责任公司
- 当前专利权人: 通用汽车环球科技运作有限责任公司
- 当前专利权人地址: 美国密歇根州
- 代理机构: 中国专利代理(香港)有限公司
- 代理人: 董均华; 邓雪萌
- 优先权: 15/141248 2016.04.28 US
- 主分类号: C21D1/18
- IPC分类号: C21D1/18 ; C21D6/04 ; C22C38/04 ; C22C38/06 ; C22C38/02 ; C22C38/38 ; C22C38/14 ; C22C38/28 ; C22C38/60 ; C22C38/18
Methods of selectively cooling and quenching surface regions of high-strength transformation induced plasticity (TRIP) steel are provided. The method may comprise selectively cooling at least one region of an exposed surface of a hot-formed press-hardened component comprising a high-strength steel. Prior to selective cooling, the component has a microstructure comprising≧about 5% by volume retained austenite in a matrix of martensite. The selective cooling is conducted at a temperature of≦about −40° C. and forms at least one quenched region comprising≦about 2% by volume austenite. The TRIP steel may be zinc-coated and having a surface coating comprising zinc and substantially free of liquid metal embrittlement (LME). Zinc-coated hot-formed press-hardened components, including automotive components, formed from such methods are also provided.
公开/授权文献:
- CN107338345A 具有定制特性的镀锌热成形钢部件 公开/授权日:2017-11-10
IPC结构图谱:
C | 化学;冶金 |
--C21 | 铁的冶金 |
----C21D | 改变黑色金属的物理结构;黑色或有色金属或合金热处理用的一般设备;通过脱碳、回火或其他处理使金属具有韧性 |
------C21D1/00 | 热处理的一般方法或设备,例如退火、硬化、淬火、回火 |
--------C21D1/18 | .硬化(C21D1/02优先);随后回火或不回火的淬火 |