公开(公告)号：US20180108507A1

公开(公告)日：2018-04-19

申请号：US15293411

申请日：2016-10-14

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Tyson W. BROWN ,  Yue FAN ,  Derek W. FULTZ

IPC: H01H85/143 ,  H01H69/02 ,  H01H85/18

Abstract: A method of fabricating a fuse includes providing a fuse element within a casing. The fuse element has a plurality of ligaments configured to direct a current therethrough. A mechanical tension is then applied to the fuse element and a filler material is added to the casing so as to support the fuse element. The filler material is then solidified. Next, the mechanical tension is removed with the fuse element retaining a residual tensile stress after removal of the mechanical tension.

公开(公告)号：US20160145731A1

公开(公告)日：2016-05-26

申请号：US14627579

申请日：2015-02-20

Applicant: GM Global Technology Operations LLC

Inventor： Anil K. SACHDEV ,  Tyson W. BROWN

IPC: C23C2/28 ,  C22C38/04 ,  C22C38/02 ,  C21D8/00 ,  C21D6/00

CPC classification number: C23C2/28 ,  C21D6/005 ,  C21D6/008 ,  C21D8/005

Abstract: Methods for press hardening galvanized, pre-treated, optionally non-annealed steel alloys are provided. The press-hardened steel alloy may have an ultimate tensile strength (UTS) of at least about 1,000 MPa and is substantially free of liquid metal embrittlement (LME). The press-hardened steel alloy may be further quenched to below room temperature. The press-hardened steel may have a multi-phase microstructure of ferrite at greater than or equal to about 1% to less than or equal to about 60% by volume and a combined volume percentage of martensite, retained austenite, and other transformation products at greater than or equal to about 40% to less than or equal to about 99%.

Abstract translation: 提供了用于冲压硬化镀锌，预处理，任选的非退火钢合金的方法。 加压硬化的钢合金的极限拉伸强度（UTS）可以至少为约1000MPa，并且基本上没有液体金属脆化（LME）。 加压硬化的钢合金可以进一步淬火至低于室温。 加压硬化钢可以具有大于或等于约1％至小于或等于约60体积％的铁素体的多相微结构，并且马氏体，残余奥氏体和其它转化产物的组合体积百分比 大于或等于约40％至小于或等于约99％。