港大工程學團隊研發「超級鋼」 強度韌性成本皆勝航天鋼

可唔可以解釋下裂紋點樣加強硬度？

另外問OP呢個post點解會出響財經台，唔係學術台?

無科研又話無科研, 有本地大學科研又話支那人
唉真係好撚難服侍

[日經多圖]文宣全港大行動 及 文宣五大安全守則
- 分享自 LIHKG 討論區
https://lih.kg/awFRzrU

樓主幫幫手置頂好嗎

問左有咩公司會有得受惠或持有技術

勁唔勁得過狼人果隻

Warm rolling 新野

iron man??

Making ultrastrong steel tough by grain-boundary delamination

Abstract
Developing ultrahigh strength steels that are ductile, fracture resistant, and cost-effective would be attractive for a variety of structural applications. We show that improved fracture resistance in a steel with an ultrahigh yield strength of nearly 2GPa can be achieved by activating delamination toughening coupled with transformation induced plasticity. Delamination toughening associated with intensive but controlled cracking at Mn-enriched prior-austenite grain boundaries normal to the primary fracture surface dramatically improves the overall fracture resistance. As a result, fracture under plane-strain conditions is automatically transformed into a series of fracture processes in “parallel” plane-stress conditions through the thickness. The present “high-strength induced multi-delamination” strategy offers a different pathway to develop engineering materials with ultra-high strength and superior toughness at economical materials cost.

hku.hk/f/upload/21012/Making%20ultrastrong%20steel%20tough.pdf

技術上整到，quality都追到，但要由零bulid up生產線成本太高cp太低

呢啲技術落入大陸
咪變成屠殺人民嘅子彈頭
打爆腦盧嘅伸縮棍
唔會有機會用係基建到
發明者 除左科學 仲要諗埋道德
唔係變左維護暴政

其實呢d鋼先會用落基建到
cheap野先用唔起高級鋼
我明你既意思
不過每個例子都錯就有d

同埋上面講其他合金更強
其實最重要係性價比同容唔容易大量生產
例如私家車係無可能大量用鈦合金
如果有留意新車既話好多車都會強調用左1xxx mpa鋼
呢種鋼正正就可以用相近成本做到更強
hku 17年既新聞稿都有講成本與拉伸強度vs現時其他鋼既比較

https://www.hku.hk/press/c_news_detail_16681.html

班on9踩港柒頭係唔會諗到依啲
佢哋只會認同自己係卑微嘅奴隸 無樣掂

你咁講我又好似記得佢係我仲讀緊二字頭course果時講過

如果真係好似上面位爸打張圖咁講，DP steel被淘汰，結果架架車都好似volvo咁變咗做坦克車前提係佢隻綱冇重過但係strength increased

2419 3416 咪有教囉
老實講佢係有料既 隻鋼佢研發左好耐 不過要拎cert同patent 先搞咁耐
上面啲人係個井爬翻出黎先啦

如果有鍊鋼廠同汽車製造商用依隻鋼，咁汽車業應該有得升呱你唔問麵爸？

又係香港幫手。。。其實支記14億人有咩用

記得第一次上佢堂，佢就攞咗一塊超級鋼畀我地玩，叫我地試吓整彎佢

利申：玩到手到損鳩埋

我都玩過，好撚柒硬。

傳說黎

盲反撚真係好撚肉酸 香港就係比你呢啲撚屌拖後腿